睡眠占据了人生的三分之一时间,对于人们的生活质量影响很大。为了提高生活质量,从古到今,人们不断探索睡眠的秘密。因为在进行繁重的体力劳动或脑力劳动以后,人们发现离理想中的幸福生活还有一段距离:大多数人都难以享受到一个舒服的睡眠,嗜睡和失眠困扰着人们。 为了让更多的人有更好的睡眠,近来,科学家开始把睡眠作为一门单独的学科来研究,并不断进入人类社会各个领域中。 Sleep occupy one third of life time, a great impact on the quality of life of people. In order to improve the quality of life, from ancient times, people continue to explore the secret of sleep. Because after heavy manual labor or mental work, people find that they are still far from the ideal happy life: Most people find it hard to enjoy a comfortable sleep, lethargy and insomnia plague people. In order to make more people sleep better, scientists have recently started to study sleep as a separate discipline and continue to enter all areas of human society.