Deliberate hyperventilation cycles followed by breath holds should not be done near water due to the risk of passing out and drowning, and individuals with glaucoma or eye pressure concerns should avoid breath holds. — Whalespan
Deliberate hyperventilation cycles followed by breath holds should not be done near water due to the risk of passing out and drowning, and individuals with glaucoma or eye pressure concerns should avoid breath holds.
⚠ High risk
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.
✕NOTSUPPORTED
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High-risk intervention — consult a physician before acting.Drug-drug interactions, dose-dependence, and screening contraindications apply.
“never ever ever do this anywhere near water people have passed out so-called shallow water bra out people have died please don't do it at all unless you get clearance to do it from your doctor because there are some pulmonary effects and whatnot and the breath holds should definitely not be done by anyone that has glaucoma or pressure uh you know concerns for the eyes”