In TODAY.com's Expert Tip of the Day, a psychologist reveals a simple morning routine to avoid winter depression and boost mental health.
ZME Science on MSN
The Eight-Hour Sleep Is a Modern Invention. Your Ancestors Had a “First” and “Second” Sleep. What Changed?
Continuous sleep is a modern habit, not an evolutionary constant, which helps explain why many of us still wake at 3am and wonder if something’s wrong. It might help to know that this is a deeply ...
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