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by psidebot
2103 days ago
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You can't hold your breath in a low pressure environment. Also the low partial pressure of oxygen causes it to diffuse out of your blood instead of in. Even people who can hold their breath for a couple minutes under normal circumstances will have severe hypoxia impairment in less than a minute above 30K feet. https://en.wikipedia.org/wiki/Time_of_useful_consciousness |
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