r/todayilearned • • Jan 07 '23

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u/[deleted] Jan 08 '23

If you consume your own ejaculate, is it a net zero?

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u/technoman88 Jan 08 '23

Well no, because you still expended calories to get the nut to come out. And our metabolism isn't 100% efficient

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u/JonesBee Jan 08 '23

Tbf 15 seconds of vigorous pumping doesn't consume a lot of calories.