this post was submitted on 31 Jan 2025
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[–] [email protected] 2 points 1 week ago

If you get knocked out and end up underwater, does the reflex to hold your breath kick in or does it require consciousness?

Like is survival (if you're alone) dependent on just coming to (and understanding what's going on enough to sit up) before you run out of oxygen and CO2 buildup overrides the hold breath underwater reflex, or will you possibly come to with lungs full of water (if you come to at all)?