[shoutatthesky]

You are right Wes. I was lucky enough to have one on one training daily over a 2 month period. Breathing correctly with ujjayi breathing. And yes the holds are intense.
I wouldn't say my practice put me in a hypoxic state but I do feel the same sort of calmness I used to feel after yoga as I now do after an apnea session. In fact I quite often would fall deeply asleep in savasana!