Nope I think its to risky, nice deep breath and slow relaxed finning and keeping calm is whats important IMO
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H2Andy:i haven't timed myself in a while, but a few years back, when i still smoked,
it was about 2:45 (never got above 3:00) (that's static)
actually swimming around, i haven't timed myself ever, but i am able to
go to around 30-40 feet, hang out a little, and come back up... barely...