I was just wonder i've been analyzing the stomach vacuum for a couple of days and putting it into use, and i try to do it all the time. My bf is i predict around 10-15 percent, and its not as near to see fully ripped abs etc haha
but i was wondering when you release all the air, how do you guys do it for a minute or even 30 seconds. I consider my
lung capacity to be pretty good, and my ability to hold my breath pretty good as well, but when i let go of all my air in my lungs, and I suck in my tranversal abdomen muscles i get a "hard" pressure on my trachea (i think this is because of the negative pressure and all the air outside wants to come in?). Well anyways, when i can no longer keep my stomach vacuum, i let the air come in, and it comes in really quickly and i don't control it (because of the pressure gradient). So yeah, care to tell me what you guys think? Thanks!