Folk proverb has: “spring sleepy autumn sleepy summer snooze, sleepless winter March.” I believe that many people see this sentence, must have a very strong resonance, spring is a season of growth, many people are instead sleepy and weak, especially the daytime energy is very poor, but at night is not good sleep. In fact, Chinese medicine has long been aware of this phenomenon, “Ling Shu – Ying health will be”: “Rong Wei of the line, do not lose their normal, so the day essence and night close. If the Ying and Wei is not harmonious, the circulation is out of order, then the day is not fine, the night is not close.” But because, in our daily life, there are so many phenomena of “not fine in the daytime (no energy during the day) and not close at night (not sleeping well at night)” that we all think it is normal. A few years ago, a foreigner named Bernd Hagemann came to China and was surprised to find that the Chinese people have a “magic skill” – no matter what difficult conditions can sleep. He made a fuss and took photos of them and uploaded them to his website “www.sleepingchinese.com”, and published a book called “sleepingchinese”. This foreigner also fervently introduced: “When China wakes, she will shake the world,” warned Napoleon. But let’s not forget that hardworking people need their sleep too. This statement may be true. But we must not forget that the people who work so hard for this need their sleep too.) He is right that hard-working people should have their own sleep time, but one can add that there are still many factors related to sleep: in general, the younger you are, the longer and more often you sleep. Sleep time is closely related to age and is determined by the laws of human growth and development. Infants and children are immature in both brain and body, and teenagers continue to develop their bodies, so they need more sleep time. Older people, due to the loss of Qi, blood, yin and Yang, “Ying Qi decreases less and Wei Qi is cut down”, so there is “day not fine, night not close” phenomenon of less sleep, but it is not equal to the physiological sleep needs to reduce. On the contrary, because the elderly sleep depth becomes shallow, the quality is not good, but should increase the necessary rest, especially the nap is important, night sleep time should also refer to the standard of children. “Less sleep is a big problem for the elderly”, “ancient and modern Jiayin” that the elderly should be “in case of sleep is on the pillow”, which is very consistent with the health reason. The length of sleep is also closely related to a person’s physique and personality. Chinese medicine as early as the “Nei Jing” has a clear discussion on this: “This person’s intestines and stomach is large and the skin is wet (astringent), and the flesh is not solved. The intestine and stomach is large, the Wei Qi stay long, the skin is wet, the flesh does not unravel, its line is late, stay in the Yin also long. Its gas is not refined then want to close, so more lying down.” “Its intestines and stomach is small, the skin is slippery to slow, the flesh is soluble, the guard gas of stay in Yang also long, so less close”, the above shows how much sleep is related to the body fat and thin size. Generally speaking, according to the classification of clinical physique, Yang Sheng type, Yin deficiency type sleep time is less; phlegm and damp type, blood stasis type sleep time is relatively more. According to the classification of the five elements of the body, where the gold type, fire type sleep time is relatively less, while the water type, earth type sleep time is more. According to the classification of body type fat and thin, fat people have more sleep time than thin people, fat people with thick couples and often cold body have the longest sleep time, this is due to the “Wei Qi more or less” different. In fact, Chinese medicine in clinical practice, there are a lot of insights, can be used in a very low-cost safe and effective way to adjust the quality of sleep, as well as the time, to a good. Different environments and seasonal changes affect sleep. In spring and summer, it is better to sleep late and get up early (about 5-7 hours of sleep per day), in autumn, it is better to sleep early and get up early (about 7-8 hours of sleep per day), and in winter, it is better to sleep early and get up late (about 8-9 hours of sleep per day). This is in line with the law of the four seasons growth and collection. The average person sleeps for a short time on sunny days and for a long time in bad weather. As the altitude of the region increases, the sleep time of the average person decreases slightly. With the increase of latitude, the average person’s sleep time should be slightly longer. Sleep is also related to the nature of work, physical exertion and living habits. Physical workers require longer sleep than mental workers, while mental workers have longer REM time than physical workers. Modern research suggests that the optimal sleep time (called the central sleep moment) is different for each person. It can be divided into “owl type” and “lark type”. The owl type has a multiplied ability to think at night, with high energy and work efficiency, but the morning spirit is not good. The lark type is characterized by early sleep and early awakening, high energy during the day, and fatigue at night. Generally speaking, most people have a larkbird rhythm. In addition, the length of sleep is also related to mental factors, nutritional conditions and working environment. Although the required sleep time varies greatly among individuals, it is considered normal as long as it meets the sleep quality standards. The quality standard of good sleep In Eastern Jin-Zhang Zhan’s “The Essential Collection of Health”, there is a picture of the gods and immortals: “Forbid not to lie down for a long time, the essence will be repelled” and “Forbid not to sleep more, the gods will be relaxed”. It is believed that “long sleep hurts the qi”, so that the yang energy, mental slack. It is clear that more sleep does not necessarily meet the requirements of health. Too much sleep and love of bed can cause the cerebral cortex inhibition, so that the brain cells lack of oxygen. 1, fall asleep quickly. 5 to 15 minutes after going to bed into the sleep block state; 2, deep sleep. Sleep in the whistle evenly long, no snoring, not easy to wake up; 3, no night. Few dreams during sleep, no dream panic phenomenon, rarely get up; 4, get up quickly. Wake up in the morning light body, good spirit; 5, clear mind during the day, high efficiency, not sleepy. Generally speaking, if the quality of sleep is good, the sleep time can be less. Body always feel poor energy? Try to sleep for a period of time Ziwu sleep is one of the ancient sleep regimen, that is, every day at the time of the son, noon sleep, in order to achieve the purpose of nurturing. Chinese medicine believes that the time of the ziwu, yin and yang, the extreme bloom and decline, the body’s qi and blood yin and yang is extremely unbalanced, must want to sleep quietly, in order to wait for the gas back. Modern research also found that 0:00 to 4:00 at night, the body’s organs power down to a minimum; 12:00 to 1:00, is the most fatigued time of the body’s sense of nerves, so the quality and efficiency of ziwu sleep are good, in line with the health reason. According to statistics, especially the elderly nap can reduce the incidence of cardiovascular and cerebrovascular disease, there is a preventive health care significance.