CARTA: Unraveling the Origins of Concealed Ovulation in Humans
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- Опубліковано 28 гру 2023
- Human ovulation lacks visible signs, unlike chimpanzees and bonobos with conspicuous genital swellings during fertility. This led to the concept of "concealed ovulation," seen as a human adaptation. Proposed reasons include encouraging paternal investment, confusing paternity to deter infanticide, enabling secret mating and female choice, and reducing female rivalry. Many non-human primates also have unsignaled ovulation. While self-reported human mating doesn't match ovulation, debates persist on subtle reproductive cycle influences. Some cultures use menstrual taboos to disclose fertility status. [1/2024] [Show ID: 39275]
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Check out "The Miraculous Healing Power of Food with Anthony Lim" here: ua-cam.com/video/Nuts6ZE5wok/v-deo.html
I read that as the Miraculous Healing Powers of Antimony. I’m so glad I was wrong
This is a joke right? Why did a man f Up women in puberty with chemicals that destroyed the original men they were tested on in the beginning of contraceptives??? Whatever blame it on whatever you wish to yet men have one Primary hormone while estrogens (Plural?) Answer that one once?
Qss a
.Certainly, here are critical thinking skills along with their definitions in bullet point format:
1. **Analysis**: Breaking down complex information into simpler parts to understand its components and relationships.
2. **Interpretation**: Understanding and explaining the meaning of information, data, or events.
3. **Inference**: Drawing logical conclusions based on available information and evidence.
4. **Evaluation**: Assessing the credibility, reliability, and quality of information and arguments.
5. **Problem-Solving**: Finding effective solutions to complex or challenging issues.
6. **Decision-Making**: Making sound choices based on a careful consideration of available options and their consequences.
7. **Creativity**: Generating innovative ideas, solutions, and approaches to problems.
8. **Reasoning**: Using logical and rational thinking to analyze, synthesize, and draw conclusions.
9. **Deductive Reasoning**: Drawing specific conclusions from general principles or premises.
10. **Inductive Reasoning**: Formulating general conclusions based on specific observations or evidence.
11. **Abductive Reasoning**: Generating the most likely explanation or hypothesis when faced with incomplete information.
12. **Conceptual Thinking**: Grasping and applying abstract ideas and principles to real-world situations.
13. **Metacognition**: Reflecting on and monitoring one's own thought processes and problem-solving strategies.
14. **Information Literacy**: The ability to locate, evaluate, and effectively use information from various sources.
15. **Open-Mindedness**: Willingness to consider different viewpoints and perspectives without bias.
16. **Skepticism**: Questioning the validity of information and claims, especially in the absence of strong evidence.
17. **Clarity**: Expressing ideas and arguments in a clear and understandable manner.
18. **Precision**: Using language and concepts accurately to avoid ambiguity and vagueness.
19. **Logical Fallacy Recognition**: Identifying errors in reasoning and argumentation.
20. **Evidence-Based Reasoning**: Relying on data and evidence to support claims and decisions.
21. **Problem Identification**: Recognizing and defining problems or challenges effectively.
22. **Critical Reflection**: Thoughtfully reviewing and analyzing one's own thinking and decision-making processes.
23. **Active Listening**: Paying full attention to others' ideas and arguments to understand and evaluate them.
24. **Pattern Recognition**: Identifying recurring themes, trends, or relationships in data or information.
25. **Contextual Awareness**: Recognizing the broader context and implications of ideas and decisions.
These critical thinking skills are valuable for making informed decisions, solving problems, and effectively engaging with complex information and situations.
I dont need sleep, i need ovulation lore.
😂
I'm on 4 hr sleep and I had to study after taking a nap. But then I found this video
Lmaoooo
What about both?
😂🤣😂🤣
So happy to see someone acknowledge that menstrual cycles are not a consistent 28 day cycle
I thought this was common knowledge??
I have a theory that it wasn't that Human's fertility was concealed visibly on purpose but instead that the opposite happened: We evolved to appear always fertile even when we weren't actually fertile. So it wasn't that we evolved to seem always not fertile but that we instead evolved to seem always fertile. The end result is the same but the cause and reasoning is different. Because the health benefits of frequent sex and the social bonding benefits from frequent sex outweigh the energy expenditure required to have sex when not in the fertile cycle.
Good observation! I agree completely!
Agreed
Having frequent sex has no health benefits it’s on the other hand a huge risk for disease
To add to your theory; bonobos, one of the few other animals that have sex often and as a social activity, also have concealed ovulation. To an extent.
Nope. The cost of pregnancy is far too great for this to make any sense.
This is the nicest comment section I’ve ever seen.
Right? I was scared to see the comments thinking id see a bunch of immature comments
"We have no idea how old human breasts are."
The undergrad in me cracked up at that one 😅😂😂
I guess he lacks expertise in that regard? 😂 I think I can be reasonably accurate in determining that. 😅
I'm surprised that some pretty obvious things weren't considered.
Human babies need a lit of care, it takes a long time for them to develop enough to take care of themselves. Thus it is optimal that humans don't produce too many offspring too often.
This is quite possibly a reason for becoming pregnant not being very easy anyways. The female body is actually quite hostile for fertilisation/embryos. The embryos need to be quite "tough" to survive, because the investment on pregnancies and children is so big.
It was considered! Hunter gatherers having 40 instead 400 menstruation cycles in their lifetime.
It was a 20 minute talk. Im sure there are papers and or books which discuss other suggestions in detail.
And then there's raising your children to be competitive in school and beyond, so that they can enter MIT rather than rob clothing stores for a living.
@cryora they don't rob for a living. They self medicate and need money for that addiction.
They medicat to not feel the abuse there parents did to them. And the cycle goes one.😅
@@aurelienyonrac They grew up in the hood and were surrounded by bad influences. As a parent then you have to make sure your kid grows up in a nice are, which is expensive, or somehow manage to grow up in a bad area without turning bad themselves.
It is fascinating to me how critically underestimated the importance of concealed ovulation in humans is; in my opinion it is the keystone to human societies becoming possible.
1) Concealed ovulation makes mating monopolization by a dominant male exceedingly difficult; it would require far too much attention and energy for a dominant male to police access to all of the females in the group, and he has to sleep and eat sometime. This makes the reward for being dominant much lower, and the costs and risks remain, and this allows the egalitarian groups, as detailed by Boehm in "Hierarchy in the Forest," that small tribal groups universally are to arise.
2) The group and the females benefit from greatly reduced rates of infanticide, as the males each have their own children they protect (leaving paternity uncertainty aside for the moment), and no male is coming to power and killing a bunch of children. This makes the group stronger in conflicts with other groups.
3) There is less internal violence between males, again increasing group strength for conflicts with other groups, as they are not seeing their strongest kill or injure each other fairly often.
4) Most critically, concealed ovulation allows human groups to grow beyond the size of forty or so individuals who are all closely related, groups based on kinship. It is not just that beyond this size kinship attachments fail, as Dunbar noted, it is also that beyond this size utter chaos would rein if the groups were still dominated by coalitions of males. Imagine how many male coalitions would exist in a theoretical chimpanzee group of 120 members; it would be a near constant chaos of fighting and shifting allegiances, and infant mortality would be close to 100%. Increased group size is, of course, a huge advantage in conflicts between groups, but it also requires, as again Robin Dunbar noted, a different means of bonding, because too much time would be required to bond by grooming. And here the dominoes start to fall, in my opinion; if we abandon grooming, well then fur becomes far less adaptive as it will become pest infested, so we become naked, and then to replace grooming, it sure helps to be able to talk, as Dunbar noted yet again in "Grooming, Gossip...,' and then if we are naked, well a fire would sure be great on a cold night...and then if we have a fire, let's try cooking some of this meat....
The whole evolutionary pathway that brings us to being humans seems to me to start with concealed ovulation, it is the first domino to fall, that triggers all of the rest.
Such an interesting chain of events. Thank you for taking the time to make such a detailed comment. ❤
@@TorchwoodPandP I even forgot to mention that decreased infanticide allows for slower maturation and greater investment into children too, another key difference between humans and other primates that allows for increased intelligence to be selected for.
But most apes have concealed ovulation and have done almost none of these things. Kind of implies bipedalism and ground walking may be bigger factors
This reads more like a "just so story" than a serious academic exercise.
@@tribalypredisposedrecently came across info that other primate brains mature at puberty. This means new learning stops. Homo brains never fully mature leading to lifelong ability to learn new stuff. This is much more likely to lead to our evolution than hidden ovulation.
Concealed ovulation makes it sound like a weapon lol, women could use it like some kind of projectile attack
That's because it is weaponize by women in the form of hypergamy
@@axxa5000did you even watch the video or attempt to understand the concept? Females in many species, including our own, are sexual targets by males attempts to breed in ways that literally get them killed. The physiological evolution is a survival mechanism to reduce those dangerous behaviors. Be grateful women haven’t taken after some of the others and permanently disposing of the males they find undesirable or after breeding. Using available resources to better your quality of life is literally the basis of survival, men’s lives improve from women’s advancements and decisions. Women choosing better sometimes means they won’t choose you, get over it or be better.
@@axxa5000Just because women aren't attracted by the swan song of inceldom, that does not make hypergamy weaponized (or even a real thing in more free societies).
@@axxa5000 Broscience isnt real, seek help.
@@MomMom4Cubs Hypergamy is rampant in the West and all human societies. Good grief, please investigate before commenting.
It is unfortunate that there was not a word of consideration given to the entirely unique relationship of human bipedalism on reproductive biology and behaviour.
Seems there might well be an interesting correlation, then maybe not.
Wearing the word “pink” across the backside of sweatpants has entirely different meaning when you understand the full context, doesn’t it?
What is this unique relationship?
@@jrrarglblarg9241haha, well spotted.
Well, to begin with, adopting bipedalism meant that female reproductive organs became tucked up within the pelvic floor. This certainly would have negated any reproductive advantages associated with genital swellings, and perhaps even sight/smell signals. Essentially masked ovulation likely accompanying these developments would require, at the population level, frequent copulations distributed randomly over the female cycle in order to assure species reproductive success. In such a context, it also seems likely that female choice exercised considerably more leverage in our hominid ancestors respecting the attributes of males with whom to mate. Some preliminary thoughts concerning the meaning of bipedalism for hominin reproductive biology and related... @@MarcosElMalo2
Something something human individual autonomy, in this scenario for women particularly, concealment as an adaptation means autonomy of selection herself rather than just being a target
Facts, also those sexual characteristics being more pronounced, thus raising her visual appeal, her physical value. Her high self value and option to make her own choice as to who SHE wants to be with going hand in hand with those biological changes
Basically human biology said women's rights LOL
I just read an interesting article and came across it by chance. It turns out, out of all the apes, the bonobo conceals ovulation and is the only ape to do this if we don't count us
love that nature and evolution supports women
@@urmom72364
Well that's what the point of evolution we reached gave us the opportunity to achieve, quite frankly. It's a beautiful thing, the ultimate female form being worthy of worship, physically
I think this guy has a PHD in giving lectures as well as comparative anthropology.
The breasts and body shape of those clay figurines matches exactly the body shapes of old women. Pregnant bellies are straight out rounded--firm, carried high. Pregnant breasts get very full and swell out. Those clay bellies are sagging and have the classic "spare tire" of late middle age or older. The breasts are literally stretched out and flaccid, hanging down low. Those are post-menopausal women. They are clay models of women that had babies, but not recently! Why not consider maybe they represent something besides pregnancy.
Maybe menopause and women living far beyond just being a reproductive target had a huge impact on all of human society. Maybe biology followed humans out of just being mating animals into becoming more thoughtful, intelligent, spiritual beings and bonds of community became just as important. Elder women meant survival for carrying the knowledge of many skills learned over a lifetime, helped in childbirth, rearing children--the survival of the tribe's future, and the oral traditions of the past--cultural memories. Menopause is treated like a disease today, but maybe it is actually something that once was vitally important to human survival and a glorious part of the human story--like walking upright.
The reason for associating them with pregnancy specifically is because they were thought to have been carved by women using their own bodies for reference... And back before mirrors, you only saw your body by looking down at it. The proportions match a pregnant woman much better if you look at the statues from the top. That's why the breasts and bellies are so elongated. And, this is backed up by the surviving knowledge of ancient female-worshipping religions, the closest thing to "god" is oneself while pregnant. Godhood was a cycle in which each woman "becomes god" by fulfilling the cycle of reproduction, because to reproduce is to create sacred life. Hence the maiden, mother, crone symbology that survives to this day.
But grandmothers are still hugely important to humans of course, because we never would have evolved so far as to have civilization and culture without grandma there to guide her daughters through motherhood and all the other customs of life itself! You're definitely onto something about menopause. I mean just look at how testosterone slowly kills men overtime, even with the sheer amount of femicide taking place today women globally STILL live years longer then men on average. This is a major trend in all mammals, with females living much longer than males, and castrated males living longer than intact males. Testosterone is a hell of drug and it burns out the cardiovascular system of men like electricity eventually burns out lightbulbs. They need it to function properly, but they are trading longevity for explosive strength. Male ultrarunners burn out their cardiovascular systems faster than average healthy men, while ultrarunning seems to actually extend the lifespan of women! Estrogen also takes it's toll on women's bodies so it's no surprise that when we stop producing as much, we're only half-way through our lifespans. We also have the benefit of cellulite, which is a much more energy efficient fat-storage system than the ways men store fat. We have better immune systems too. In times of starvation and illness, women can survive 20% longer than men do. You can't rebuild society after that without healthy women, after all.
I’m 24 and i look like that without a bra 😂 Why are people nowadays do brainwashed by media that they think young bodies have to look a certain way (firm, thin). It’s just not the reality. Also in the times when those figures were made being well fed was a sign of fertility so it makes complete sense.
Did you know that the only other animals known to go through menopause are orcas, narwhals, belugas, and a species of river dolphin? Menopause is probably the most unusual thing about human reproduction
Remember that life potential in controlled settings don't always equal life span in the wild. Few people lived past 30-40 years old for the first 200-250 thousand years humans had evolved. The thing about getting older is that body parts just start to fail, it happens in every living thing. Reproduction is also known to drop in animals that are able to reproduce multiple times as they get older. Even trees produce less fruit as they get into their old age. Menopause is not necessarily special, if anything what probably matters the most is what is bound to fail first as many fatal diseases creep up once someone reaches their late 40's. If one wants to talk about survival they must also consider the eventual death.
Also those Venus figures are known to have many different shapes and weights, and have many connotations as to what they could have represented. They may even be sculptures of people who were somehow obese within their community and may even represent some sort of religious figure or a person of great power. It may even be related to food and health rather than reproduction as we don't know the culture of the creators of this figure as to how they dressed or interpreted their bodies.
@@rivitraven actually, menopause is very unusual. only a few species have it, while the vast majority only live to reproductive age, then die. so of course people can die before old age---but the fact menopause exists at all in our species means it does indeed have significance. far better to die once you can no longer contribute babies--except if old women were contributing something else...something as I said that has to do with survival of the group, the tribe, whatever term one gives it. so significant as to have a retro-active effect--the survival of her daughters or granddaughters that then carried on the genes for living beyond reproductive age. So enough of those old women survived to make it an integral part of being human...I call that very very important on the level of other big differences between humans and most other animals. I feel it gets overlooked and is therefor an area ripe for more research.
P.S.--yes absolutely, the figures could represent any number of meanings--I just wanted to put forth the idea that maybe they could represent, in some cases, older women. I have been hearing of the figures being called "pregnant" or "fertility" figures repeatedly by multiple sources for years, going back decades--in books, etc. and I think calling them that is also an assumption with no proof whatsoever. So my idea is just as valid as a possibility. Also--no nipples on any of the figures I've ever seen. Doesn't it seem odd that if they are indeed "fertility" or "pregnant" figures, there are no nipples, the obvious on only source of nutrients for babies? Pregnant people usually get swollen nipples, sometimes even leaking a little a month or two before giving birth. Hard not to notice that, even in the stone age.
I've often wondered how different our society would be if females were only fertile at one time of year, like deer.
Quite different to chimps then, who ovulate every 36 days.
Probably more male-male fighting at certain seasons resulting in the winner mating with more females. Sexual dimorphism might be more pronounced (again think of deer with antlers on males, larger body size compared to females). The overall population might be smaller since males will probably not be involved in caring for the young nor will grandparents or other near relatives. I doubt we would be as intelligent as we are now.
We wouldn't be us. The human child takes so long to reach maturity that early pre-human females recognized the value of pair-bonding. Unlike certain bird and other animal species, humans are not "hard-wired" to mate for life. So how is a female to keep a reliable male with her throughout her offspring-bearing life? She became sexually receptive virtually 100% of the time. She had also to ensure that her mate would be committed ONLY to her, so at around this time, females invented "love." Eye contact, kissing, face-to-face sexual positions all work on the human (or near-human) brain to foster feelings of devotion or attachment. It sounds rather devoid of romance stated so baldly, but it really is a beautiful example of evolutionary give-and-take. (It should also be noted that with the advent of bipedalism and the increasing size of the offsprings' heads, maternal mortality must have been extremely high. Females were at a premium and could call the shots when it came to choosing mates.)
@@pricklypear7516 I'm pretty sure that's not true. Humans clearly have a need to pair bond for life, and frequently do. However, they also have a competing desire to have sex with other people. It is entirely possible for these two simple mechanisms to be competing with each other, just as they are in birds like Swans. There is no guarantee of human satisfaction with their love life.
The reason why the two mechanisms are in conflict with each other is the same as it is in birds - because the partner might die young, or be underperforming in their duties as a partner.
Now the reason why we have so much adultery these days is down to opportunity and temptation. Must adultery occurs in the workplace. We have far more women working alongside men and away from prying eyes. That simply wasn't possible back in prehistoric times when the females went to live with the tribe of the men, the men being all blood relations and all living together and made love in front of each other. Any adultery that did occur was likely punished by instant death by means of a sharp pointy stick, which would've acted as a warning to others.
Adultery and promiscuity are the result of living in cities where people can be anonymous. It causes the spread of sexually transmitted disease against which humans (unlike chimps) have no defence. No doubt the rise of monotheistic religions was a simple means of frightening city people into behaving like they still lived in small tribes to discourage the spread of such diseases.
@@pricklypear7516 "Bonobos are sexually receptive for a large portion of their reproductive cycle, even when not near the time for ovulation. This trait has sometimes been called concealed ovulation because the male has no clear signal for the optimum time for mating. Bonobos also engage in sex in non-swelling phases of their cycle in about 1 out of 3 copulations. Chimpanzee females tend to be sexually active only during their maximum swelling phase." (Bonobo (Pan paniscus) Fact Sheet: Reproduction & Development. San Diego Zoo)
THIS topic is definitely “painting outside the lines” of my usual UA-cam routine. Especially from a male perspective, a very interesting topic.
That's good. I'd encourage you to paint outside the lines more often!
Wow. I never gave a thought to my eggs fighting to see who gets to go down the shute first. Cute!
I suspect a lot of these comments are dunning-kruger effect.
I'm just happy to see someone spreading the challenge 'this is what our textbooks say about the menstrual cycle --but please take it with a pound of salt'.
Thabk you for the lecture & posting it for us♡
Have they asked female women? We do swell when ovulating,, not so much the vulva, but commonly our breasts. Wtf?
Imagine walking into the office, with "OVULATING!" written on your forehead once a month. I don't get listened to anyways, thinking about my colegues looking at my huge ovulation sign instead of pretending to listen to me like they do now, sounds like horror.
Only about a minute in and I can tell you that we are designed to communicate when we want sex. That is one of the major reasons why consent is so important.
Look up the wiki for 'history of women's rights'. In my lifetime husbands couldn't be charged for [r] / in most states / only if he used a weapon to force her? Women were regarded as property more through our history than consent has been.
Sorry for the downer take. If you have a counter, my mental health could use it 🥲
so true its survival
actually, in species with dismorphism between males and females, rape seems to happen frequently. So consent is not important when it comes to reproduction, women can become pregnant from rape and males practice it all the time. They almost always get pleasure from sex, contrary to women, and they have the strength to force women to it whenever they want.
Consent and respect are socially nice things but unfortunately, not prerequisites for reproduction.
@@kifi672animals are complicated bro, evolution is too.
There are almost no societies where rape is the norm when it comes to sexual reproduction. Obviously there are arranged marriages, but among human groups sexual reproduction is done through consent as the norm. Of course reproduction without consent plays a part in selection as well but not more than reproduction with consent.
@@kifi672she didn’t say it’s a prerequisite for reproduction, cause all you need is a sperm and egg. However, she was trying to point out a reason why humans don’t have obvious display of ovulation. Humans have higher intelligence than other animals. We don’t revolve around sex, there are vast amounts of thoughts and ideas that our brain has evolved to consider. Some of these ideas lead us to create certain rules and regulations we should follow to live in a harmonious society. Some call it ‘nice things’, moral obligation, human rights etc. But it all boils down to ‘just cause you can doesn’t mean you should’.
I am surprised at the paper that states women do not have more s*x around ovulation, or rather, I would have preferred a different initial hypothesis, i.e. the question of When is your libido highest? Because it does not mean that s*x automatically follows (for plenty reasons). All I can say as a woman is that for decades I was always keenly aware of the times I was ovulating, simply because my libido was at its highest and my body would have been willing to make very stupid choices many times had not my brain interfered. The onset of menstruation 14 days later would always prove the point that it was ovulation making me want s*x at those special times.
i knew someone whose libido was at their highest during their period, and no time other.
our two anecdotes combined support the hypothesis that women in general do not necessarily have more libido (let alone copulation) during ovulation
also, libido by definition is a desire for copulative behavior, it is a psychological phenomenon that is individually experienced by people and it does not necessarily, or always, result in successful copulation
@@driftingdruid I know one woman like that, too, plenty of others more like me. That is why I would be more interested in a question of "When is your libido highest?" All over the animal world female animals tend to "know" when they ovulate or are ready to ovulate by showig behaviour to induce copulation. I am not saying that women show behaviour to induce sex during ovulation, but maybe that is because we also know how to fight urges.
I specifically used the word libido because I am not interested in how often women have sex, but how often they reallyreally *want* sex, which is unfortunately not always the same thing.
I have never experienced any cyclical/monthly pattern; my drive has always had more to do with emotional issues. I imagine I can’t be the only one like me either. Honestly, I suspect the whole concealed ovulation thing is nature’s sly trick; if I knew I was fertile, I’d generally avoid sex in that time. I could do family planning without drugs. It works okay now, but our species probably would have died out in times of high infant mortality if we’d had that kind of knowledge.
“You remove the fat pad, then you legal” is the best description of top surgery I’ve heard yet
Humans have lost the primal ways of seeing fertility. If women seriously paid attention to their bodies they would feel when they ovulate, smell it, and see their discharge has also changed.
Males also have lost the primal instinct of smell. A woman sent changes around ovulation. In some ways humans ovulation is not fully concealed.
A lot of us still do. This was a weird watch for me. I can tell when I’m ovulating, there are a lot of tells. But I wasn’t in the survey so 🤷🏾♀️
Someone asked if our clothing hindered our ability to tell when ovulating and I think that’s a good questions because, I know it’s not everyone, but even my husband could tell when when things were changing
Here to say we DO know when we’re ovulating (sometimes)
Assuming a female doesn't have any hormonal imbalances.
@@pinacolada1393 We know by experiencing symptoms related to it such as cramping, different vaginal discharge, etc. women with hormonal issues will also know when they experience different symptoms… they’re not dead 😅
Agreed. It's really apparent when I'm fertile. My cheeks are rosy, my lips have more pigmentation, my breasts swell and have more pigmentation, my vulva swells, my discharge is completely different, I smell different in a good way, I feel different in a number of ways as well. It's all very obvious and anyone who was closely observing me could make the same conclusions. Only one of my babies out of 4 required more than one cycle to conceive. As a tangent, ovulation pain is intense for me and it is hard to miss that little explosion.
@@angrytrees7519 yes I deal with pretty painful ovulation cramps myself! It’s like I never get a break haha
Thank you for this video, I found it very much interesting intriguing an enlightening, more thinks to try to wrap our head around an learn more from many angles an points of view. So thank to you an all for this wonderful information, looking forward for more way in this area an how it compares , cause an effectiveness how it relates in alot of life as humans we are. Have a blessed 🙌
Superb!! As always.
Great presentation and fresh perspectives.
at 12:50, the speaker talk about how concealed ovulation could have been the result of mate-guarding, using the words:
"if you are a young guy, what are you to do if you had old powerful men who try to vie for the ovulated egg of your partner"
Now this striks me as odd, as it seemingly makes no sense. Concealed evolution happens in women, not men, so the "young guy" has nothing to do with the process.
Evolution doesn't happen based on the wishes of others (the "young guy" in this example), it happens as a response to selective pressure.
If it evolved in women, then it HAS to be about greater survival and reproductive prospects of the particular women and her children.
It has nothing to do with wether or not a particular male wanted to mateguard his would-be reproductive partner, or at the very least it currently eludes me how that would be correlated.
Older men with more resources and social standing would provide a higher chance for her and her offspring to survive.
In the example provided we should expect to see open ovulation, because she wants the male with the most resources and highest standing to notice and choose her as a partner?
Additionally, we humans haven't been in complex societies long enough for such a radical change to occur, so the reason humans evolved concealed ovulation should predate complex societies.
At 14:30 he goes on to say that concealed ovulation is the norm all of a sudden and conspiculous ovulation the outlier which needs explaining?
"The backdrop of monkey and apes is that ovulation is not honestly declared?" but in the early segment around 3 minutes, did he not state the opposite?
Does someone know where I can read more on this?
good presentation thanks👍
Awesome lecture!
Concealed ovulation possibly because hominini (humans and their forbears; e.g. H. erectus, H. habilis walked upright, and so (even when sitting) the pundenda can't be seen and hence not often visible by males. Since chimpanzees and bonobos (our closest living relatives), knuckle walk on all fours (probably even forest chimpanzees spend at least 50% of their waking time on the ground), then conspicuous ovulation makes more sense for this species.
Absolutely fascinating! I have never heard about visible ovulation cycles in primates. Such an interesting comparison!
This was really informative and entertaining! I learned new things about primates, and about the interplay between society and sexual strategy... the latter has been a hot political topic here in the U.S. since the 60's when the contraceptive pill became available. Empirical information helps me cope with my apparently unhinged fellow Americans.
The ancestors who evolved obligate bipedalism were subject to the pressures of differential mortality and differential fertility in the form of genital swelling decreasing mobility.
That’s it. We stood up and the swelling became seriously inconvenient. Differential fertility and differential mortality at play.
My theory is that br- became the human signaling mechanism after bipedalism emerged, and then humans evolved to fake their ovulation signals. So now we're left with women whose br- are permanently enlarged, and an ovulation signal that's been rendered completely useless.
Knuckle walking independently evolved in chimps and gorillas it is not the ancestral state
@@personzorz The pelvic structure and foramen magnum changes that indicate obligate bipedalism are not present In chimps, bonobo and gorillas.
The evidence clearly suggests that conspicuous ovulation via genital swelling first evolved in the chimpanzees and bonobos, and that inconspicuous ovulation was the ancestral state.
If it was important to our reproductive strategy, we could have evolved nipple swelling. There was one species mentioned doing that in the lecture
Very interesting video. There’s so much more that can science can offer to this topic. I’m interested in how stress and other stress related issues have also played a role in our sexual evolution. Ex. How stress can delay a period or how stress can turn off/turn away sexual pursuits. How stress leads to high testosterone levels in females…etc.
Maybe, but the “stress, conception” link in women is often over-stated.
Stress has some small effect on conception, but women can and do conceive in truly terribly stressful conditions where pregnancy was totally undesired, such as young women in concentration camps or in the starvation and war of the Dutch Famine cohort, and the idea that stress or not “wanting” to be pregnant can “shut down” pregnancy is totally unreliable, at best, though believed by some.
For example, there were plenty of pregnancies resulting from the mass SA by Russian troops in Germany at the end of WW2, despite these being women facing war, invasion, assault, political upheaval, food and supply shortages, shame and condemnation for any pregnancy, etc. But if fertile, many conceived.
The amount of stress an afab person has to be in for their period to stop is mostly if not only the long term life threatening kind. Like actual starvation.
Also it's weird to call women and afab people in general "females" even in a "scientific" context. Note how in the video, a lot of the reference to human females was not "females" but "women". The use of "female" can be very dehumanizing, especially in casual conversation.
Stress alone cannot trigger the delay.
It's a complex chain of many factors but the major role is played by the stress.
And modern day stress is a lot different and complex than from before
I'm a 39 year old AFAB person and when I experience a lot of interpersonal stress I have my period, but do not ovulate. When I feel loved, accepted, beautiful, and whole, I ovulate.
If I remember correctly, in times of great danger and stress more female babies are born than male babies. That's another interesting side of the effect of stress on the overall reproductive trends in a population.
This is the best "sex-ed" I've ever received!
Woman's menstrual cycles were always a bit of a mystery.
Also loved the quote "A big problem in modern medicine is that normal variation can become considered pathological instead of part natural variation." (10:36)
I kept waiting for him to mention bi-pedalism and our head sizes making pregnancy and subsequent delivery very difficult on female bodies. I kept waiting for him to mention that fertilization is relatively easy to achieve but that human female uteruses are very hostile to fetuses making it extremely difficult for a less-than-perfect fetus to be born (keep that in mind when judging babies born with physical or mental "defects").
I kept waiting for him to mention those things as possible reasons for concealed ovulation. Or even as another commenter mentioned: it may be that we don't have no signs of ovulation, but that we are constantly showing, what other species may see as, signs of ovulation as a way of limiting hoarding of females by males. It would be hard to keep track of your females being in heat if they're constantly showing signs of being in heat. It would make make competition for females much harder to achieve and it would mean that infanticide is much less likely as it's harder for the males to track ovulation and make sure their offspring are the only ones in the next generation.
I feel as though a lot more could have been added
That spot the irishman thing caught me by surprise lol
Many thanks, very enjoyable! And interesting and informative.
Would be useful to see the speaker's name in the info blurb.....
im supposed to be studying AP economics but ovulation lore is more important 🙏 cool vid
That’s surprising to me. I have a very regular cycle of 32 days and I only have a couple days a month where I am at all interested in “the activity“ and it is always around day 11-13. At that time this interest is suddenly very pronounced. Sufficiently so that I will have noticed and recorded it in my diary. If it is then frustrated it becomes very VERY disheartening.
I find it EXTREMELY curious that while there were many laws and regulations tightening women's reproductive health rights and general control of women's bodies and choices, that a movement against hormonal birth control is happening too. And I find it takes place particularly on social media like TikTok and IG which are very female dominated and algorithms can target them. Interesting...
Maybe people are just starting to realize that taking hormones that make ur body think it's pregnant 24/7 will mess with us, and they are starting to understand all the ways that it changes the way we live. Most importantly, it completely changed the type of guy you would normally be attracted to, when we really should allow our hormones to help its choose the best mate for us especially if we're going to have kids.
I don't think it's suspicious I think it's great that people are questioning why doctors are giving the pills or like candy, to me it's suspicious that people are convinced they need to take a pill every single day of their life, sounds to me like a great deal for pharmaceutical companies. Anything that highly benefits them should be questioned in my opinion
As someone who uses it, don’t get me wrong, hormonal birth control in its current form sucks hard. However, until more non-hormonal forms that ACTUALLY work are invented, hormonal birth control is a literal godsend for women everywhere. Bc was one of humanity’s greatest inventions, and saves women from the life of fear, guarding, and subjugation our female ancestors went through
@@nicoledoubleyouSo I take BC because I wanted to.
I have PCOS, my periods were debilitating, I had cystic acne, it was misery. When I was old enough to make my choice I did. I’ve been on BC for 5 years, it has helped me so much.
If other ladies don’t want to take BC that’s cool! More power to them! But like all things, that doesn’t mean we can dictate the choice of others in such an intimate area.
If hormonal birth control had been originally made for men , it never would have been made. The side effects are far too great.
@@samanthacallaway2276 for some people such as myself, the effects of hormonal birth control are very detrimental to my health. Fortunately, I didn't suffer the consequences as bad as some of my cousins did, such as having breast cancer in their 20s.
The reason humans don't advertise when they are ovulating is because, given the choice, and knowing the consequences, nobody would have enough babies. It's to allow for accidental pregnancy, which we must always be JUST too dumb to prevent.
Did they, though? I'm on the spectrum and one of my quirks is that my sense of scent is extremely strong; I could tell when me stepsisters and anyone else close to me were ovulating or menstruating through the change of their scent. I'm not sure if most humans aren't also doing this unconciously
I don't think that's the norm. I have irregular cycles so I can only guess when I'm ovulating through tracking my body signnals. And even this is not very accurate as I often get my period later then calculated.
🤢
I can smell it too. There's a sweeter, muskier scent to their sweat, and my discharge smells very distinct. I'm sure that pheromones definitely play a role in human reproduction
@@Eli-zx2rg ovulation is like honey, menstruation like the scent of wet jeans and pregnancy is like a hearty, meaty rose lol
Worked as a teacher with kids 13-17 at a boarding school.There was some synchronised menstration in evidence. When the females were ovulating, there were far more behavioural problems with the boys. The school software tracked behaviour.
that was awesome!
so many genius, scientists in the comment sections… wouldn’t it be great if you all shared your research studies and papers
I'm 39. I know that if I experience a lot of interpersonal stress in my life, I will get a period but not ovulate.
If I feel beautiful, accepted, and whole, I ovulate.
What?
how do you know you are ovulating
@@OsirusHandle sudden moodiness, cramps in one half of the lower belly, increased libido etc. ~2 weeks before their period begins
@@katleido fair enough. the talk had a paper that suggested no increase in libido though
Lol😂
Outstanding 😊😊
Thanks for that interesting presentation, especially the comparative behavioral analysis between primate species. I would like to focus on one particular bullet point, as I believe it should lead to further studies and pave the way for better understanding. Unfortunately that bullet point is presented here as a kind of vague and uncertain footnote, when for some of us it is neither vague nor uncertain:
"A number of reports on subtle ovulation cues, possibly tracked by males, rarely backed by hormonal data."
Ever since I was a kid (now a retired grandpa) I was able to detect (at least some) ovulating women by "smell". Not sure what the correct word should be, actual smell or some pheromone. This cue seems to emanate from the nasal area. A few female partners, when being told about it, confirmed they were currently ovulating.
It's not a lasting phenomenon, usually of the order of a few hours. It's anything but subtle though, along the lines of a strong musky scent. I could detect it from a distance of a few yards in public transport, or whenever a female colleague exhaling such "smell" would enter an office or elevator at work.
As to being possibly tracked by males, I'd rephrase this part as "definitely tracked by some males". At least one but this bullet point now helps me understand I'm not the only one. I actually thought I was the only gay Eskimo in my tribe (a song by Tenacious D). Thanks for confirming otherwise. The fact that none of my male buddies would mention noticing that scent when asked seems to point in two possible directions:
- Either it's a proper smell in the sense we understand the word (cyclo-benzenes, etc), in which case it should be detectable by all but that's apparently not the case, or it could indicate that only some males possess the necessary olfactory glands and/or corresponding detection chemistry.
- Or it's some sort of pheromone that only some males are able to detect, which could explain the notable absence of smell sensation in those present but apparently not affected.
Rarely backed by hormonal data, mostly because the few who seem to notice are either within a social setting (public transport, shop, or office environment) preventing on-the-spot hormonal analysis due to social taboos, or with their partner and definitely not in the mood for a lab visit when things could get sexually interesting. But definitely backed by confirmation from such partners (a statistically representative number of them), as intimacy allows to discuss such things.
Another possible clue, not to be disregarded off-hand, could be related to autism. It is known that some autistic people develop rather heightened senses, be it hearing, touch, musical or mathematical ability, as though their brain had used its plasticity to "make up" for some drawback brought about by autism.
My view, which should be taken as a mere hypothesis, is that we had senses present in our primate past (smell most noticeable among others) that have eroded through evolution in most of us but a few. Or that have been 'awakened' for some strange reason and autism might be such a reason. Or not. Anyway, if anyone feels like digging a bit deeper into this by asking questions, I'll be at your disposal.
So some people genetically can smell certain things like cyanide. There is also a woman who can smell Parkinson’s. In the veterinary field people (including me) can smell Parvovirus, Flystrike, and HGE. I think part of it is not actively recognizing or honing in on a scent, or understanding specifically what you are smelling.
@@lissakaye610 You're right, training and force of habit develop senses such as smell. When taking my cats to the vet clinic, the first thing they do is smell their breath to detect possible ailments. Not all vets at the clinic but those with the most experience.
But in this instance it's different. When specifically asked if they could smell what I had, i.e. actively attempting to detect or hone onto an unusual scent, my buddies all said very clearly they couldn't. Yet the scent was so potent to my senses that anyone with a normally developed sense of smell couldn't have ignored it. I'm not saying they wouldn't recognize it for what it was, simply that they couldn't smell anything out of the ordinary.
Yet I'm not describing some faint or subtle scent but the in-your-face type noticeable from a distance of a few yards which would stick to my nostrils for minutes after I'd left the train, office, or elevator. Not to be confused with smelling a cat's breath when sticking one's nose an inch away from their mouth. I can also smell cyanide but thought until today that everyone else could. My bad.
I definitely smell different during different times of my cycle none bad just different. I have an extremely strong sense of smell that can be a detriment at times, I can’t stand anything scented and a lot of foods bother me.
@@samsalamander8147 It's interesting and confusing at the same time. In theory mother nature would only have gifted males with receptors corresponding to that cue. What would be the point of females noticing ovulation in other females? That would be an evolutionary anomaly.
Having said that, the scent is so strong and emanating from the nasal area that I can't imagine any woman not sensing her own signal while ovulating, nor that it wouldn't run interference with other scents, be they from food or anything producing a smell. You seem to confirm it might be the case, at least for you. The question is, do other women notice it too in other women?
As a side-note, whenever I "smell" what I believe to be such pheromones in public transport (subway, train, or airplane), I look around to identify its origin and notice signs of self-awareness when my eyes reach their target. That would seem to indicate women notice their own signal and those reacting to it.
As to the nature of that scent, it's neither good, bad, or ugly. If I had to describe it, which comes with its fair margin of error and may vary from one (receptive) male to another, it's very close to the smell of lipstick. Probably from whale fat, which is used in their production and said to be musky. I've smelled lipstick, as any man kissing a woman, but never pure whale fat. So don't quote me on that.
That said, it has the same effect on me as what you describe: it clashes with other scents and acts as a turn-off for food. The cause might be biological, as in forget about food and focus on reproduction. Thanks for your feedback, it's quite valuable.
Women somehow sync up our menstrual cycles when in extended close proximity, so it follows that we're able to detect such a scent even if we're not consciously aware of it.
Could wearing clothes result in the loss of signifiers over the course of millennia?
Eventually it will. It does, however, have to impact breeding success significantly to cause a change.
@@PowerMadLabRatsince hidden ovulation increases better mate selection and the display might have hindered female hunting and gathering it could be selected against
Match this with the females of our species being able to tell males they want to mate
Interesting, but the talk could have been better. He chased around certain points, not really going into enough detail. Perhaps, the organizers only allowed him a certain number of minutes. It's also possible, researchers only want to share a tiny portion of their research, saving the rest for their book.
Interesting
pair bonding ❤
Pair bonding is so romantic! The term should be used on more Valentine's Day cards. 😅
Pair bonding and the ability to fool a male into thinking that he is a father when he is not, in order to secure his resources for herself while gaining the genes of a superior male that she cannot get to commit to her (cheating). It's not entirely about romance.
@@_Lumiere_how do you define "superior" in this context?
@@helgaioannidis9365 in evolutionary biology, in a sexed species, a genetically superior individual is one that is "significantly more likely to be attractive to the opposed sex and therefore pass its genes to the next generation"
e.g. only male peacocks with big and colourful tails are chosen by females peacocks and get to reproduce, therefore in peacocks the males with big and colourful tails are the genetically superior ones;
Genetically superior human males are not as easily recognizable, but we can still outline some characteristics that make them (on average) significantly more attractive in the eyes of human females: tall height, wide frame, symmetrical and well defined facial features, youthful appearance, clear skin, etc...
Human females became extremely selective in their choice of mating as an evolutionary adaptation to the grand amount of resources they have to invest in reproduction, birth and child rearing (in respect to men that make almost no investment at all);
they are so much sexually selective in fact that it is estimated that only a small percentage (~5-10%) of the human male population is considered attractive (and therefore a desirable mating partner) by human females
@@helgaioannidis9365Genetically superior, what else would it mean? Taller, better facial structure, etc.
I’m concerned at the lack of agency given to women in this lecture considering completely hypothetical scenarios, such as the source of pair bonding. Or the concept that perhaps the violence of men required concealed ovulation. Rape might be reason enough as concealed ovulation to avoid pregnancy by attack in an otherwise cooperative species.
This topic has much more to do with sociology than it does anthropology - that's why it wasn't discussed here; not to mention that the earliest mentions of rape in Mesopotamian society treats women largely in the context of men to whom they are betrothed or their fathers - ie as objects of the patriarchal culture in which they existed. To even discuss rape, you'd have to get into the origins of patriarchal culture, which drives away entirely from the anthropological nature of this lecture. Neither women, nor men, nor in fact people of other gender identities, are treated any differently in this video - anthropology uses those terms as concepts, rather than as identifiers. This video discusses reproductive evolution and appropriately, if briefly, names some of the roles evolution may have played in how human beings' current reproductive biology. That's all.
I don't believe evolution gives too much thought on rape.
@@hutgirl666many species reproduce primary through what humans consider rape, even. I can see reasons why such behaviors may have been selected against in humans, but off the top of my head, I don't really see a reason why it would lead to the evolution of concealed ovulation.
@@hutgirl666 as far as I know female cats don’t ovulate before mating and the barbs on the male painfully stimulate ovulation. Male cats also bite the females neck to hold her in place. Because it’s painful a female may try to flee and cats evolved the barbs and biting behavior because of that. While you can argue rape isn’t applicable to animal behavior because they don’t understand consent the way we do, I think that cats are an example of evolution caring about what some would call “rape” as the cats have adapted to mating in a painful way. Many other animals reproduce in more aggressive ways and I’m sure they’ve evolved adaptations for that too. Cats just are an easy example. I think ducks actually are one too iirc
@@MarsPotatoes Ducks are a big ones, yes. Also female cat MIGHT fight a male they don't fight males they don't find good enough and (probably because how cat reproduction works) be more violent than a male fighting a male
Why does the auntie in the thumbnail look both disturbed and disgusted?😂
It may be possible that the ancestors we share with chimps, or even after the split with chimps but before the advent of the genus homo or even australopithecines, our line could have already had some other indication, or lack thereof, regarding ovulation. It'd be nice to know whether the types of ovulation or estrus, be they behavioral or hormonal, conspicuous or inconspicuous, can be inferred from comparative data on the genetics of species that display these varying physical states. Not to even mention how such data would stand with the other sets of data to enrich our understanding of the subject. If such a discovery were made, we could see if there was breast swelling, some other indication, or none at all in our ancestral lines prior to our genus.
I also think the presenter has been overly dismissive of the male side of how these things happen even if he did seem to explain some things. He mentioned that the male chimp's penis is too short even at full mast but doesn't say anything about why that contributes to their sperm having to be so much more energetic than human sperm. He simply mentions the length of the chimp vaginal canal and the chimp penis together, but separately from when he discussed the frantic and competitive nature of chimpanzee sperm cells. And he does the same to humans. He lampoons human male sperm cells in terms of energetic activity without mentioning that the reason could be related to the fact that human penises are longer than those of chimps, and together with a lack of genital swelling, contribute to a situation where they don't have to try as hard to get where they need to go because they are already deposited into, or at least closer to, the cervix. This, as well as what I'm about to mention below, could relate quite easily to why we don't need to generate a plug to refuse other sperm from entering.
This increase in penis size in the human male could actually be a morphological strategy for the human male to take full advantage of the fact that human females do not have genital swelling, as well as serve as more insurance, however low, that he can establish paternity given the greater number of threats out on the savannas as compared with the forests. This could have increased as ancestral species became more adapted to bipedalism and became better toolmakers and hunters. The savannas are also quite open compared with the dense rainforests, and penises would also have more room to swing, so it's not just competition with other males that might have played a role in that, but also environment.
It's always hard to say what process or change comes first in the evolution of more complex organisms because once life reached a certain level of complexity, there were, and continue to be, so many things working together all at once.
Interesting. However, the lack of lifestyles of the various forms of marriage is missing, polygamy, polyonomy and polyanomy, multi females or males or multi partners in a marriage was left out of the comparisons which maybe cultural but may have biological underpinnings related to environmental pressures that are foundational.
There's other species in the world that practice monogomy though, and polygamy (especially large scale, and with so many children and taking a more... Let's very loosely call it "wild" view on women, as part of its purpose) is very outside the norm for human behavior unless there's a certain level of power and control involved-that's why you mostly see it in relation to emperors and religion. Any other relationship type with multiple mates is usually only 3 or 4 people focused more on cooperation and actually caring for the children that exist than having a large amount.
Unfortunately there's not much research about this sort ofthing, but it's probable to be the same reason we're theorized to get other sexual differences for - if you have, say, 6 adults caring for 12 kids (4 to every female), sure that's fine, but if you have 5-6 adults caring for 8 kids, suddenly those 8 kids chances just went up all because aunt oogba likes miss orga more than any of the men that have tried to court her. Or in the case of polyamory, aunt oogba and who is now aunt orga maybe both have some kids, but likely less than other family members and on top of it there's another man involved in the family to help spread that load
You really think marriage came before reproductive evolution?
@aff77141
That's the big question, isn't it? What is "natural" or "normal" for humans. Nothing we do nowadays fit within "natural behaviour" for our species. We live in self-made zoos. Society dictates our behaviour
Thanks to better nutrition we can make babies earlier than in the past (by we I mean people in developed countries). At the same other economic and cultural pressures push the age of baby making later and later. Many women get pregnant for the first time 10 years after their first ovulation. Nothing about it is natural but for our culture definitely normal
Having sex is different from desiring having sex! Ovulation makes women want to do more sex, but the society is stronger than our desires and feelings.
Or it could be also so men(men especially) and women form the connection so they can guarantee their children be theirs. Clandestine sounds all fancy and female control in a way but it's sort of confusing to us too unless we logically think it out but even then it's still not guaranteed we know when we are ovulating. My perspective would be it encourages female control over her life and should encourage responsibility in men. Like I'd argue the reason men tend to "enjoy" it more (women can too just it takes effort from them both I think) is because many men are in my experience selfish and it gives them something to gain apart from the responsibility and child but I'd also mention that it takes their focus off of just responsibilities and gives them the idea that they are working for something and gaining as in the past they'd have to do much manual labor. Nowadays I'd argue they don't deserve that "reward" as much since women are doing far more work than them usually for the same or less gain compared to men.
I understand that the lack of visual signals of ovulation we would think of it as hidden as we are a very visual species. But this ignores the other sensory indicators. Smell being the main indicator but also includes behavorial and hearing. How a female acts during ovulation is clear sign. Their are also auditory signals. But less the visual the main is the sense of smell. Males are most triggered by the sense of smell. We humans, culturally have shifted that dramatically of course.
Great video.
You do not smell when a woman is ovulating give me a break lmao
@@gaddaffilastname4532are you sure he’s a primate? Based on the fact he thinks he can hear ovulation signals, I think he might be a cat.
@@gaddaffilastname4532probably not from others but I do feel when mine's happening XD
@@gaddaffilastname4532
Yes you can. It's pretty well documented. Freakonomics has a study on how strippers and lapdancers get consistently increased tips whilst ovulating and those on the combined oral contraceptive pill - which blocks ovulation - don't see this increase in tips.
@@gaddaffilastname4532
You actually can, though. I can smell when one of my sisters is ovulating. Their sweat smells sweeter and muskier. I can also smell it in my discharge. I can also smell how close I am to my period. Every girl I know knows exactly what I'm talking about. We know what our normal smell is and we can smell the change in discharge when we're close to our period. Not all women can smell the ovulation, but I have a few friends who know what I'm talking about when I've talked about it. I'm sure that men can smell it too. Sometimes I test my boyfriend to see if he can smell a change in my scent and when I'm ovulating he always somehow mentions how good my skin smells or sticks his nose in my neck and tells me he really likes my perfume (I usually never wearing perfume). Pheromones are not unique to other animals and just because we traded our noses for better eye-sight, doesn't mean it doesn't play a key role in human mating. Look up the sweat experiment and it shows that people who are attracted to each other's sweat have opposing immune systems and make the best genetic matches.
What about the evolutionary origins of just-so stories?
nice
Dubious spattering of data, it would be preferred to put some of these references in the description or provide a place to interact with citations
I'm curious. In pair bonding, approximately how often does the first infant born resemble the mother? Is it more or less than a composite of both parents?
In relation to fertility: Has any research been done to determine how often a late menstrual period denotes a spontaneous abortion among sexually active women? And how would that research be carried out with reasonable accuracy? Thank you.
Where the hell is the rest of it
I got my notebook out and started taking notes
Starts at 1:35
Beautiful
Our species has been up-right and walking for a few million years. Imagine trying to walk with huge genital swelling. I know my skin flushes when I meet someone I find attractive.
If human dudes made a plug I'm pretty sure I'd just go full lesbian
😂😂😂😂😂
Same, this comment madw laugh so hard
Leonard Shlain discussed this in Sex Time and Power.
I’m really thrown by the lack of sex around ovulation! Did they include a question about the desire to engage vs actually engaging?
This has nothing to do with the criminal syndicate in Dust Town, but I still learned things.
Well I’m glad it did.
Humans are undoubtedly the smartest animal species. It makes sense that if ancient humans had obvious ovulation, the relationship between sex during ovulation and having babies would be very obvious. So obvious, in fact, that many women not wanting more babies would abstain during that time. Since death rates were so high, that might have meant that the human race would have faced extinction.
What do you mean "concealed". I feel when I'm ovulating and men sense it, too.
Just because we have evolved into a highly cultural society that has become almost completely unaware of their senses beyond sight and hearing doesn't mean our pheromones have stopped doing their thing.
Totally agree. We are blind due to modern circumstances.
Conceal: not allow to be seen; hide.
2nd definition: prevent (something) from being known; kept secret.
Both cover what is meant by "concealed"
I cannot imagine men sense it honestly, are there any studies on this? Just from personal experience it is never noticed by the men around me, and I also can't guess when any given person is ovulating in any way.
There is one person in the comments that claims he can sense women ovulating. But it might or might not be common.
Except it isn't hidden the way people want to believe. It is subtle, not concealed. Female behavior changes when fertile, vs when they are not, including the types of males they prefer. Move beyond the Victorian era. @@JaD-mq3cr
Wait don’t gorillas eat grain or is that completely out of scope?
I’ve been interested in the theory that we spent quite some time as an semi aquatic species that came across some years ago that lead up to our up fight stance letting us wade further into deeper water and the ability to swim something most apes cannot do due to light bones or the fact women have a better time giving birth in water and baby’s are usually born with a thicker coating of mucus than most mammals comparable that of seals and what clinched for was a program about a couple who tried living with a troop of chimps and lasted about a week before the chimps literally took them back to civilisation because they were suffering badly from dehydration even though they were in a rainforest they could find enough water to drink to me that implies close to large body’s of water say lakes or rivers with need to stand up right and that their lower body is invisible the need to display down there decrease
When he mentions that old men can still be fertile reminded me of an old joke where a 90 year old man is getting married to a young girl is asked if he was worried of dying he says ho well if dies she dies
What ? The ending is typed wrong.
Could you imagine if women had heats, I wonder if we would be required to be on birth control despite the significant negative health effects so we can remain productive going to school work etc and not cause discomfort to males
By design!
Nope.
Probably because we're ready every month.
Nevertheless, *some* men can detect by smell when their wives are fertile.
Who was curious about this? 😮
I can understand myself if I am honest but no one else.
I now think US feminist movements should take full advantage of the term concealed ovulation and turn it into some sort of "conceal and carry"
I think the term "tactical ovulation" would be perfect to go in line with this idea
The moons cycle is the same as the menstrual cycle..
I remember my X and I doing it every other night so I would get pregnant. My X and I split when I would not allow his family to bully me.
There is too much social chaos when it isn't concealed.
It's a stigma that we human's have today when we don't do as our earilest ancestory did. There was a time, when just as females do today, have an odor when their in hespes as it referred now only to the lower form's of animal. Male's and female in those day's relied on the various odor's just as the ape's and other animal's still do today when attempting to determine if and when a female is in hespes.
Religion has caused us over the thousands of year's in addition to some of the more purdent individual's who were in charge at various times. To loose our sense of smell. I mean, if one were to come up to a female today and deliberately smelled their crotch, they be arrested post haste. When I was young not all female's were envolved in the or proficent in their femine hygene as they are today. And there not being any airconditioning, it was sometime extremely easy to determine if and when one's sister, mother, aunt, etc. was having their monthly cycle's. And afterward's not having the same care about hygene they have today. It lingered on and on and on. In a way one would refer to as smelling like fish. Causing female's in the earily day's of my youth to utilize a considerable more amout of perfume's which is the how and why perfume's first came to be.
It’s “Concealed” Some comments here imply women know it😂
Many women feel it.
Having children in a world of suffering in unethical.
However it is a way of impacting the suffering of the future world.
4:12 Hanuman langurs
Perhaps period syncing and moon phases re ovulation contributes to conceiled ovulation?
No mentioning of period syncing. A bit disappointing because it actually means a lot in the quest to understanding human mating behaviour.
It does actually mention it - to say there is no evidence for it
@@beesmcgee4223
Women I’ve heard from say it’s true. Especially girls from my country who attended boarding school and lived in dormitories with dozens of not hundreds of other girls.
But it does though? Me and my mom would sync up before she got menopaus. It's a very real thing @@beesmcgee4223
@@kiuk_kiks lmao what
period synching is NOT a real thing
everyone runs on different cycles though, of varying speeds, so they can *appear* to synch due to random chance, but they don't.
@@kiuk_kiksperiods are often at least 5 - 7 days long, so it is not surprising for women to appear synced because one might just be starting and one might just be ending. Period syncing is not a thing.
Is it just because we walk upright now and havent had enough time to evolve something visible besides our pubic region yet. Which is why we now spend millions on breast and butt implants. 🤷🏻♀️
Because we ovulate more often than most other animals and are almost constantly able to conceive, maybe permanent breast are our conspicuous ovulation?
I read they are a REALLY strong indicator of genetic fitness because of symmetry. This could be outdated information, but the symmetry of breasts becomes extremely noticeable very quickly the bigger they get.
@@angrytrees7519everything being symmetrical matters not just breast in what your referring to. It's true ugly mis shaped people may not have had good genes. But overall just like eye balls or toes most people have two similar sized breasts 🤔
No ones breast are symmetrical. They don't work that way. There's always one that's generally bigger than the other and it's often the left as it's over the heart.
The intro was a complete was of time. Get to the point. I clicked because of the title. So talk about the title's topic. Geez
How does UA-cam get to know that I am reading sex at dawn?
I checked it out from my library online, so I knew how it knew.
Yes ok…..it’s science.
Not porn.
Science is ok.