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It's an interesting idea, why do humans and other species sleep? Maybe it is simply because they can. If there's no good reason to be awake, then sleep. Save yo
by galaxyLogic 2y ago
It's an interesting idea, why do humans and other species sleep? Maybe it is simply because they can. If there's no good reason to be awake, then sleep. Save your energy for a better time to be awake. That doesn't answer why we have dreams however.
- Sharlin 2y agoPeople literally die if they go long enough without sleep, and of course everybody knows the cognitive impairment that even a moderate amount of sleep debt causes. That said, saving energy is certainly one part of it – and what else could a diurnal species do in the darkness anyway? (And similarly for animals adapted to night or twilight activity).