A lack of sleep during the workweek could take a toll on your waistline.
People who lived for two weeks in a sleep lab gained almost two pounds over a five-night period when they were limited to five hours of sleep a night. When they went back to sleeping as much as nine hours a night, they ate less and lost a small amount of weight.
Researchers think that the reason people gain weight when they aren't getting enough sleep is that, even though we need more food to stay awake, we tend to overcompensate and eat more than we need.
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