No one knows why we sleep, or what dreams do for us.
Why sleep?
Sleeping plays such an enormous part in the lives of so many organisms that it must be profoundly important to existence itself.
The benefits of unconsciousness, even in the wild, must outweigh the obvious risks of being discovered by a nocturnal predator.
Nature does not declare a Christmas Truce.
What, then, are these benefits?
What could be worth, day after day, taking such risks?
Sleep deprevation is considered torture.
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