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Swim more...breathe less.
As stupid as it sounds, the only way you are going to get better at being underwater doing work (swimming), is being underwater doing work. The following can improve your capability:
Improve your aerobic capacity (run, bike, swim, swim underwater while holding your breath, etc...)
Most importantly - RELAX. The more relaxed you are, the less oxygen your body will pull from your lungs.
Lastly, hug the bottom of the pool.
Good luck.
Eagle
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Primum non Nocere
"I have hung out in dangerous places a lot over the years, from combat zones to biker bars, and it is the weak, the unaware, or those looking for it, that usually find trouble.
Ain't no one getting out of this world alive. All you can do is try to have some choice in the way you go. Prepare yourself (and your affairs), and when your number is up, die on your feet fighting rather than on your knees. And make the SOBs pay dearly."
The Reaper-3 Sep 04
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