05385,Expose your obscene body

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  littlelillyfckslut

  August 29, 2024 at 7:05 am

  you also actually do breathe out oxygen. the air is comprised of about 78% nitrogen, 21% oxygen, and the last 1% is a mixture of a ton of different gases. when breathe in though, your body doesn’t use 100% of the oxygen, only about 13%. You breathe out a lot of carbon dioxide and nitrogen, as well as about 8% of the original oxygen you took in.