Breath hold training

[freedivernd]

Al,
if you only stay down for a minute???!!! Would that be a work like crazy dive to go to 150' in 30 seconds and then swim like crazy for the surface or is that a sink down to 15' with no exertion, a stay for a bit and a float back to the surface.. all with in a minute? :
That's crazy!! I'll tell you about hyperventilating. One time while training in the basement I hyperventilated, took a breath and started walking... didn't get half way up the stairs before I passed out! Fortunately... I didn't get half way up the stairs!! Hyperventilating can almost completely take away the urge to breath.. add in some physical activity like swimming and you have a formula for disaster. having an urge to breath is a life saver. It's better to build up to a longer comfortable breath hold by doing successive breath holds with good breath ups.
I've never been close to being bent by freediving I'm sure but I wouldn't want to be dropping down to 70 or 100' a bunch of times after doing a scuba dive. Doesn't sound like a good thing to be doing, especially after all the reports of people getting bent doing just that.
I'm no expert but.....