What position do you use?
" If you worry about waking up in the middle of the night, relax.
While conventional wisdom tells us that we should get at least eight hours of sleep, a recent report by the BBC suggests that historically our ancestors normally had two sleep sessions: one early evening, a break, and then a second later at night.
Researchers believe modern sleeping problems may have roots in the human body's natural preference for segmented sleep as well as the ubiquity of artificial light."
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