Traditional Chinese medicine pays attention to human activities to adapt to the changes of the four seasons; "Do it at sunrise and rest at sunset." Harlem Smith, a master of time management, once said a word; Vigorously advocate the concept of "magic three hours" and encourage people to consciously go to bed early and get up early: get up at 5 o'clock every morning, start a new day earlier than others, and run ahead of others in time; Use the "magic three hours" at 5-8 o'clock every morning to do what you want, without interference from anyone or anything, often with concentrated mind, clear thinking and the highest work efficiency; In order to compete with time, we must emphasize perseverance, test self-discipline and establish a positive "self-concept" for ourselves. He believes that going to bed early and getting up early is not for "poisoning" our sleep time, nor for "crazy tax collection"; On the contrary, we just adjust the sleeping and getting up time slightly, which is the need to use time efficiently.

According to a study by the Japanese Ministry of Health, Labor and Welfare, people who go to bed early and get up early have lower cortisol content in saliva, so their mental depression is also lower. According to researchers, there are two kinds of human hormones: morning hormones and evening hormones. Cortisol is the representative of morning hormones and plays a role in dispersing stress. The test results also show that people who go to bed early and get up early have lower anxiety and insomnia indexes than those who often stay up late.

After a comparative study of people who stay up late for a long time and those who insist on going to bed early and getting up early, experts found that people who stay up late for a long time are under stress, and the secretion of various hormones in their bodies is 50% higher than the average level of people who go to bed early and get up early, and the blood vessels are 50% higher than those who go to bed early and get up early. People who stay up late for a long time are more likely to get cancer, because cancer cells are produced during cell division, and cell division is mostly carried out during sleep. Staying up late makes the sleep disorder and affects the normal division of cells, which leads to cell mutation and cancer cells. The latest research results of the National Health Research Center in the United States show that "staying up late" is a kind of "gambling" behavior in which people attribute their health to themselves, and the bargaining chip is "sleep". Modern medical research has also confirmed that healthy living habits and regular sleep can make hormones in the body secrete normally and maintain a relative balance, thus ensuring that living organs work in a stable internal environment. If you often stay up late, the normal operation law will be disrupted, and the secretion law of hormones will be destroyed to varying degrees, thus endangering health.