Original Yahoo! answer question: Sleep?do we need energy for that?and why? and How many calories do you burn while sleeping?
Funny Answer: No, when humans go to sleep they end up in a state of suspended animation where the heart and breathing stops. Then the body temperature drops toward room temperature. At that point the human body becomes rigid like a plank, senseless and does not burn calories or energy at all due to the sleep. You see this phenomenon all the time in hypnosis shows.
Serious Answer: Actually you burn quite a lot of calories when you sleep, The exact amount varies based on your weight, but for the average person (160 lbs) it is about 70 calories per hour. This energy is used to maintain body temperature, pump blood in your veins, breathe, maintain brain activity, digest food etc... Somebody who would sleep 24 hours a day would still burn about 1600 calories per day. An active person burns between 2000 and 2500 calories per day though, so being awake is better for your diet than sleeping all day, but not by that much.
Funny Answer: No, when humans go to sleep they end up in a state of suspended animation where the heart and breathing stops. Then the body temperature drops toward room temperature. At that point the human body becomes rigid like a plank, senseless and does not burn calories or energy at all due to the sleep. You see this phenomenon all the time in hypnosis shows.
Serious Answer: Actually you burn quite a lot of calories when you sleep, The exact amount varies based on your weight, but for the average person (160 lbs) it is about 70 calories per hour. This energy is used to maintain body temperature, pump blood in your veins, breathe, maintain brain activity, digest food etc... Somebody who would sleep 24 hours a day would still burn about 1600 calories per day. An active person burns between 2000 and 2500 calories per day though, so being awake is better for your diet than sleeping all day, but not by that much.
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