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gettinslizzard

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gettinslizzard

gettinslizzard wrote an answer about on July 10, 2012

You only get fifteen seconds, because that is roughly how long it takes deoxygenated blood to circulate from your lungs to your brain. See, when you're placed in a vacuum, the gas exchange process works in reverse?your lungs actually pull oxygen out of the body and dump it back into the lungs where it's exhaled, which only serves to hasten the onset of hypoxia. Holding your breath doesn't help either. The pressure differences in and outside of the body cause a severe form of the bends, similar to what divers experience when ascending too quickly. This will likely cause your lungs to rupture. In fact, you will remain conscious for up to a half minute if you exhale within the first few seconds.

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