睡眠是人的正常生理需要,一般人的一生有1/3的时间是在睡眠中度过的。一般人每天必须保证8小时睡眠,第二天才能精力充沛,工作起来劲头才能足。倘若睡眠不足,缺觉,第二天就会感到疲倦乏力,注意力不能集中甚至头昏、头痛。缺乏睡眠比饥饿更容易使人死亡,一般人连续10天不睡觉,他可能就会衰竭而死,不然也会精神失常。然而在医学史上却有一些几十 Sleep is the normal physiological needs of people, most people’s lives have a third of the time spent in sleep. Most people must ensure that every day 8 hours of sleep, the next day to be energetic, work up to strength enough. If lack of sleep, lack of consciousness, the next day will feel tired and fatigue, attention can not focus or dizziness, headache. Lack of sleep is more likely to cause death than hunger. Most people do not sleep for 10 consecutive days. They may fail and die otherwise they may also suffer from mental disorders. However, there are dozens in the history of medicine