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Why it's simple: evolution! Because if you sleep less you have more time when you're vulnerable to enemies, more time to hunt for food, more time for work, etc.
by giuliomagnifico 5y ago
Why it's simple: evolution! Because if you sleep less you have more time when you're vulnerable to enemies, more time to hunt for food, more time for work, etc..
- layer8 5y agoI’m asking for why humans evolved in that way while other primates/mammals didn’t. One would assume that there was some sort of selective pressure.
- svachalek 5y agoAccording to the article, one idea is it's because they slept on the ground and were more vulnerable to predators. But then speculates that it could also be because people were better at using dark time more productively than other animals, thanks to story telling and fires. If I can add my own speculation, I think we are our own predator and selection pressure. People haven't been threatened by nature for a very long time, but we are threatened by each other.