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Blakut t1_j13fb9h wrote

Reply to comment by Molkin in Could being submersed in a sealed tank of fluid help humans survive heavy G acceleration in outer space? by cheeze_whiz_shampoo

yes, you can actually oxygenate the blood through your butt (the intenstines) because they are highly vascularized. You do need to irritate them a bit, or scratch them, so to get more surface area to the blood vessels.

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