By ancestors I mean like “cavemen” in a sense. If they had to sleep in caves surrounded by a million different noises, predators, insects, and sleeping on primitive beds – I just cant see them getting any good night rests.
In today’s world sometimes we cant sleep even with great pillows, mattresses, soothing sounds, sleep aid medicine, etc. For some even the tiniest noise or light wakes them up. Thanks for and whatever the reason early hominids must have been pretty hardcore.
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Does your dog get a good night’s sleep? Or is he up 6 times barking at the wind?
Animals would not have the brain power to associate interrupted sleep with fatigue. And even if they could, they would probably lack the self control to suppress it, and if they did… they would probably get eaten by a bear.
The intolerance for disturbances during sleep probably came after we figured out agriculture and founded permanent settlements that afforded more security.
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