It may seem like your body is not doing much while it's sleeping, but it is still burning calories. Normal life functions, like breathing, expend energy enough to burn calories, although the calorie count during sleep is very low. While a low calorie count is not surprising, what may be surprising is the body burns nearly as many calories while sleeping as it does while you are sitting around watching TV. The number of calories you burn while sleeping is low, with the exact amount depending on your weight. If you weigh 160 pounds, you burn 69 calories per hour while sleeping which adds up to 552 calories burned during eight hours of sleep. A 120-pound person burns 51 calories per...
