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Q&A If a species didn't sleep how else would they "recharge"?

Humans (and most animals) sleep. The reasons aren't really clear but most people believe: We have to sleep because it is essential to maintaining normal levels of cognitive skills such as spe...

9 answers  ·  posted 9y ago by Liath‭  ·  last activity 8y ago by Liath‭

Question evolution sleep