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Timing is everything

Besides the one in the brain, biological clocks have been found all over the human body

By Emily Anthes
Globe Correspondent / August 20, 2007

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The human body is a master timekeeper. It knows when to spur us to eat, sleep, or gear up for activity. It has predictable daily, or circadian, rhythms that make sure all its parts are doing the right thing at the right time. (Full article: 1028 words)

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