I mean what kind of super advantage do we have by spending the night when its already hard to see shit, god forbid potential Predators, unconscious?
In: Biology
As far as we can tell, it’s a physiological requirement of having a brain. Sleep is essential because it regenerates our brain and allows a whole host of regenerative functions to take place around the body.
You’re correct- sleeping puts any animal at a disadvantage against predators (and in the case of some marine animals, drowning). That’s why some animals have evolved the ability to sleep with one brain hemisphere at a time- remaining conscious and alert throughout. Human never developed this ability presumably because it never was advantageous to our tree-dwelling ancestors.
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