Quote:
Originally Posted by laminar
Then closer to the surface (and hopefully you are close enough) you suddenly get a huge mother contraction of the diaphragm. This is no ordinary CO2 contraction. I would call it a hypoxic contraction. Then you know you are screwed. Or you've already started to fade out.
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I once mentioned this, but deleted it because of complaints that I was implying that there is a reliable warning of hypoxia. I never said that. What I meant is that sometimes, and only sometimes, I experience 'hypoxic contractions' if I am too close to the limit. Sometimes it does not happen at all, so it is not in any way useful as a warning of hypoxia. This has only happened occasionally, and I try to avoid it.
Lucia
