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petodo
3y ago
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I remember reading about it, but care to explain simply why it helps?
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TamDenholm
3y ago
Not an expert but my basic understanding is that the hyperventilating before holding your breath basically oxygenates your blood so that you can hold for longer.
postsantum
3y ago
No, that's because hyperventilation washes out CO2 so the CO2 alarm going off later than usual
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