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card_zero
on Sept 16, 2024
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Nothing: Simply Do Nothing
Experimentally, increasing oxygen doesn't reduce how often people yawn.
We still don't know why people (or various mammals) yawn.
koziserek
on Sept 16, 2024
[–]
your body doesn't regulate its functions based on diminishing o2 levels, but raising co2 levels
card_zero
on Sept 16, 2024
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That was tested too, according to the Wikipedia page about yawns. Still no.
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We still don't know why people (or various mammals) yawn.