Freediving Instructors - need help teaching Frenzel?

I have more and more freediving instructors who purchase my online Frenzel course for $10 per student ($49 for the public) so they don't have to waste time in class teaching the Frenzel equalization method and have more successful classes.
Reach out to me at [e-mail] to learn more.
You can see the course @ immersionfreed...