Is our sleep pattern based off the length of the day? Submitted by ebb5 t3_y7s95g 2 years ago in askscience 167 comments 1,331
JediJan t1_isyi5nh wrote 2 years ago Reply to comment by ammenz in Is our sleep pattern based off the length of the day? by ebb5 Most predators were more active in the nights than the days too, so it was safer to go out in groups during the days. Permalink Parent 13
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