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Written and reviewed by
MD - Ophthalmology, MBBS
Ophthalmologist, New Delhi  •  37 years experience
Sleeping an extra hour a night could help a person drop 14 pounds in a year, according to a University of Michigan researcher who ran the numbers for a 2,500 calorie per day intake. His scenario shows that when sleep replaces idle activities -- and the usual mindless snacking -- you can effortlessly cut calories by 6%. Results would vary for each person, but sleep may help in another way, too. There's evidence that getting less than 7 hours of sleep revs up your appetite, making you uncommonly hungry.

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