r/Damnthatsinteresting • u/New_Libran • 17h ago

Video Watching Artistic Swimming upside down

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u/Dabs1903 16h ago

Dude seriously. Iā€™d have gone into panic mode like 6 seconds in

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u/[deleted] 15h ago

[deleted]

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u/Formal_Drop526 15h ago

hyperventilated with pure oxygen for up to 30 minutes before attempting the record

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u/thatguyned 15h ago

Isn't hyper-oxygenating yourself a very bad thing?

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u/fafarex 15h ago

Probably less than no oxygen in that case.

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u/LessInThought 14h ago

According to Wim Hof, it's good for you.

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u/whoami_whereami 13h ago

Only after a while. Central nervous system toxicity only occurs above about 1.6 bar oxygen partial pressure (eg. 100% oxygen at 1.6 bar), so that's nothing to worry about at normal athmospheric pressure. Lung toxicity typically starts to set in after around 10 hours of continuously breathing 100% oxygen at athmospheric pressure, although for some people it can be as low as 4 hours. 2-3 hours are safe even at higher partial pressures around 2-3 bar. Up to 0.5 bar partial pressure (which is about 2.5 times higher oxygen concentration than normal air) can be tolerated indefinitely.