Does anyone here enjoy static apnea as a sport? I have never taken any lessons, and I practice very unfrequently (only when I remember about it, which means once a month). Today I have bested my record at 3'46", dry apnea, without hyperventilating. Can anyone beat that? I'm pretty sure some freedivers will appear and have scores in the high 5 minutes. I'd like to hear some tips from you, in particular how to exercise. Right now I'm focusing on willpower as I have yet to come close to running out of oxygen (after a breathhold I am not out of breath and am able to talk without gasping for air). However, I'm sure there are ways to build CO2 tolerance. Also, I always last longer on my second breathhold (2'30" average for first, 3'15" for second). Why is that?