睡眠,是大脑的一种保护性抑制。睡眠充足、精神饱满;睡眠不足,精神萎靡。难怪莎士比亚把睡眠称为“疲劳者的沐浴”和“生命盛筵上的主要营养”。 那么,维持身体健康所需要的睡眠时间是多少呢?《征服失眠》一书的作者凯·舒尔茨博士认为:“维持身体健康所需的睡眠时间没有定数。一些人睡4个半小时就足够了,而另一些人要睡9个小时。只要处于这个时 Sleep, is a protective inhibition of the brain. Adequate sleep, full of energy; lack of sleep, apathetic. No wonder Shakespeare called sleep “bathing for tired people” and “main nutrition for a life feast.” So what is the amount of sleep time needed to maintain good health? Dr. Khishtulz, author of “Conquering Insomnia,” said: "Some people sleep for 4 and a half hours as long as they sleep Enough, while others are going to sleep for 9 hours at this time