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I've got a bungee cord attached to my reg mouthpiece that goes around my head. Should I ever black out, there is a good chance I will still be breathing. I solo dive most of the time and at times use nitrox, so this is a lot cheaper than a full face mask. I figure it's a good idea even when with a buddy in case he doesn't see I'm unconcious--even if he does notice right away, I'm still not going to inhale any water. I never use it when DMing classes for obvious reasons. I didn't think 3 feet of bungee would cost $13.
Other posts have mentioned that there is no reason for a normal healthy person to blackout while on scuba. Years ago I read of a 38 year old former olympian female runner who was still in tip top shape suddenly die of a heart attack while jogging. I know the risk of that is very miniscual, but thus the bungee cord. Of course, I hope I never see a shark as well. There may be other rare reasons for passing out. When I was a kid I fainted twice. For some unknown reason you could have a gas imbalance while diving--like way too much CO2. Or something could scare the S*^t out of you.
Other posts have mentioned that there is no reason for a normal healthy person to blackout while on scuba. Years ago I read of a 38 year old former olympian female runner who was still in tip top shape suddenly die of a heart attack while jogging. I know the risk of that is very miniscual, but thus the bungee cord. Of course, I hope I never see a shark as well. There may be other rare reasons for passing out. When I was a kid I fainted twice. For some unknown reason you could have a gas imbalance while diving--like way too much CO2. Or something could scare the S*^t out of you.
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