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Offspring

All "live systems" in nature (i.e. living things) eventually die. Life goes on not by creating things that live forever, but by reproducing, i.e. regularly rebooting from a previously vetted simpler state.

And this happens at all levels of abstraction. At higher levels it's not called "death" but "extinction" but it amounts to the same thing -- the wholesale destruction of previously accumulated state.

Wake then Sleep in Humans

Binge then Purge also.

I sweat out a lot of junk in sleep. I wake up needing 40-60 oz of water. Then I can do whatever. After a shower though…ugh…