Internal Time : Chronotypes, Social Jet Lag, and Why You're So Tired Condition:Like New SPENCER CHAPMAN

SPENCER CHAPMAN

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Internal Time : Chronotypes, Social Jet Lag, and Why You're So Tired Condition:Like New SPENCER CHAPMANEarly birds and night owls are born, not made. Sleep patterns may be the most obvious manifestation of the highly individualized biological clocks we inherit, but these clocks also regulate bodily functions from digestion to hormone levels to cognition. Living at odds with our internal timepieces, Till Roenneberg shows, can make us chronically sleep deprived and more likely to smoke, gain weight, feel depressed, fall ill, and fail geometry. By