Slumbered Sleep

FIGURE 3
During the neolithic era, three traditional hunter-gatherer
groups in Bolivia, Namibia and Tanzania
were studied by a UCLA research team. In this
sleep study, it was discovered that these people
went to bed about 3.5 hours after sunset, disproving
the theory that modern technology may be to
blame for people staying up later. The subjects
slept an average of 6.25 hours per night, sleeping
more in the winter and less in the summer. (Jill
Zwarensteyn, 2022)
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