The method is found on YouTube actually. The hallmark of you performing the method well is that you can go longer without oxygen by timing yourself (my progression went from 20 seconds to after 16 rounds to 3 minutes -- by breathing out all air first and then not breath). I won't describe the method here as you're more helped with people overexplaining it than underexplaining it.
One wouldn't teach a full programming language to a novice in one comment either.
Disclaimer: I was one of the guinea pigs.
The method is found on YouTube actually. The hallmark of you performing the method well is that you can go longer without oxygen by timing yourself (my progression went from 20 seconds to after 16 rounds to 3 minutes -- by breathing out all air first and then not breath). I won't describe the method here as you're more helped with people overexplaining it than underexplaining it.
One wouldn't teach a full programming language to a novice in one comment either.
Disclaimer 2: I'm not a doctor.