A Primer on Why we S L E E P
VitalityExplorers.com
Sleep is crucial to our vitality but many questions remain such as:
Exactly why do we sleep for up to a third of our lives?
Where did the eight hours of sleep rule come from?
What is the history of sleep?
This post will try to answer some of those questions.
Exactly why we sleep for about a third of our lives is not fully understood. We do know, however, th…
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