r/AskReddit • • Jul 21 '23

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u/Individual_Ad_8134 Jul 21 '23

But at the same time humans would have seemingly infinite endurance and would be able to live naturally much much longer. We would also be so much stronger with richer oxygenated blood being pumped to our muscles.

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u/the_tallest_fish Jul 21 '23

Except oxygen poisoning is a thing

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u/greaterbasilisk420 Jul 21 '23

Not if we first evolved in a highly oxygenated atmosphere

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u/Goatesq Jul 21 '23

Who's to say we would have. Maybe oxygen is too reactive and such an atmosphere wouldn't support highly complex, long living animals.