"Human beings are the only species that deliberately deprive themselves of sleep for no apparent gain," says sleep scientist Matthew Walker, author of Why We Sleep. Originally broadcast Oct. 17, 2017.

from Arts & Life : NPR https://ift.tt/2LrPQrH
"Human beings are the only species that deliberately deprive themselves of sleep for no apparent gain," says sleep scientist Matthew Walker, author of Why We Sleep. Originally broadcast Oct. 17, 2017.
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