Lack of sleep lowers the level of a hormone that stimulates metabolism and decreases hunger. In addition, short nights of sleep cause the concentration of a hormone that increases hunger.

• 睡眠少,会减少一种能促进新陈代谢并减少饥饿感的荷尔蒙。另外,睡得少会聚集一种增加饥饿感的荷尔蒙。