[amihov]

I in my case it is different. I am not trying to avoid hyperventilation but just to control it. I have a sweet spot when my head starts to spin that means that i have just past that point. So in this case i wait 10 to 20 sec just so i get back on track and then i am ready for dive. I have notice that if i have past the sweet point i have problems whit swimming it feels like i am out of energy and i feel sleepy during the dive. The best thing is just to experiment in the pool when you have someone watching you.