We can't find evidence that holds up here. Proponents are reasoning from mechanism or analogy rather than direct human data, and the most credible skeptics raise objections we can't dismiss.
So, this is exactly what gets people in trouble because Yeah. Like, you know, we don't have a reliable sensor for when our our oxygen is low. And so that happens to people underwater because that feeling that wanting to breathe is a buildup of carbon dioxide.
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Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.
Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
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once you get to the point where you're doing instead of long and slow exhales very forced exhales with limited inhales which was the breath work that I just took us through that as you've just alluded to is blowing off co2 which can be very useful for a longer breath hold time and for intermittent hypoxic training but at the same time because co2 is your body signal to breathe or one of the body signals to breathe when you breathe off co2 like that and then say go underwater or do a dive or something like that yes you can hold your breath for a longer period of time but you also vastly increase the risk of passing out or shallow water blackout