Ciamillo,
If the you are using nitrox is to minimize SWB. There are more effective ways to minimize risk of SWB.
1. Dive with a buddy and learn what your personal signposts are so that you never come close to blacking out.
2. If you are getting any "uh-oh" signposts, stir the unused air from your throat and bronchials by pumping your mask or cheeks and then relax on your way up.
3. Develop the habit of exhaling underwater. Time your exhale so you are almost done when you surface. This reduces the vacuum effect in the lungs and ensures your first major O2 burnin' activity at the surface is an inhale rather than an exhale.
Humans are well adapted to apnea. Seems to me that screwing with gas mixtures will throw off our 'hard-wired' genetic abilities.
How is GA doin' anyhow? I spent alot of time in DeCalb County as a kid. My grandpappy grew up in Macon. PM me and we will chat.
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Octo
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