padding-bottom: 66.72%;">Every person needs sleep everyday. But with the high development of society, most people have more and more things to do and have less time to sleep. As a result, many people are lack of sleep. For a short time, they may not realize the bad side of it, but it will bring something bad for them after a long term. First of all, lack of sleep will do harm to people’s look. If they do not sleep enough, they will get black eyes and bad skin easily, which will make people look no so beautiful. Secondly, lack of sleep is bad for the spiritual outlook. A person who lacking of sleep always looks tired and has no power to do things. Last, not enough sleep for a long time will have bad influence of thought. They always can’t be active in mind. 人人每天都需要睡覺。但是隨着社會的快速發展，大多數人都是事情越來越多，而睡覺的時間卻是越來越少。所以很多人都是睡眠不足。短期的睡眠不足並不會感覺到有什麼特別的不適，但是長期以往就會感受到了。首先，睡眠不足會影響到外貌。如果說不夠，很容易會有黑眼圈，皮膚也容易不好，這樣看起來就沒有那麼漂亮了。其次，缺少睡眠也影響到一個人的精神面貌。經常睡眠不足的人看起來會比較疲憊，感覺做什麼都無力。最後，長期缺少睡眠還會影響思維，經常做不到思維活躍。
