کیفین ہمارے جسم میں کس طرح کام کرتی ہے۔ / How caffeine work in our body Urdu/Hindi

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Over 100,000 metric tons of caffeine are consumed around the world every year. That's equivalent to the weight
of 14 Eiffel Towers. Most7 of this caffeine is consumed
in coffee and tea, but it's also ingested in some sodas, chocolate, caffeine pills, and even beverages labeled decaf. Caffeine helps us feel alert, see complete video to know more about caffeine.