Thread: Couple of interesting questions...
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Old November 25th, 2007, 10:10 PM   #5
FoxTrot
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How to start Freediving - DeeperBlue.net Forums

check that out, should give you a lot of info.

As already mentioned, do not hyperventilate. As for practicing, maybe think about trying the 02 and CO2 tables listed on that site I linked.
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