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A well educated non diver asked me a question yesterday, and caught me flat footed. If you are at depth, why can't you hold your breath longer? You have more O2 in your lungs, and CO2 would build up more slowly. Is it CO2 buildup in the body or brain, not the lungs, that causes the breathing reflex? And yet hemoglobin can't work with the air stored in the lungs for a sufficient refresh to suppress the breathing reflex? #----------------------------------------------------# Roger Carlson H 310-frogger Somewhere off Hermosa Beach, CA W 310-813-0858 Roger_Carlson@at*.sp*.tr*.co* F 310-812-1363 #----------------------------------------------------#
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