大家都知道,长期睡眠不足人就会生病,但很多人却不知道,睡得太多同样不好。美国的一项研究发现,50岁以上女性每天睡9小时中风风险增加。专家也认为,如果睡眠过多,不仅消除不了疲劳,还会影响健康和智力。在睡眠时间中,死亡率最低的睡眠时间约为7小时。 As we all know, long-term lack of sleep will get sick, but many people do not know that sleeping too much is equally bad. A U.S. study found that women over the age of 50 were at increased risk of stroke for 9 hours each day. Experts also believe that if you sleep too much, not only can not eliminate fatigue, but also affect health and intelligence. During sleep, the sleepiest time is about 7 hours of sleep.