Ancient health practitioners have said: “The secret of health care when sleep is the first.” One third of a person’s life is spent in sleep, which is not only a physiological need, but also a guarantee of health. To ensure the quality of sleep, restore physical energy, so as to achieve the purpose of disease prevention and health, prolong life. The four seasons of sleep “Yellow Emperor’s Classic of Internal Medicine – Four Qi Tuning Shen Da Lun”: “Spring in March, this is called hair Chen, heaven and earth are born, everything to glory, sleep at night and get up early, wide walk in the court, was hair slow shape, in order to make the Zhi Sheng, born and do not kill, give and do not take, reward and do not punish, this is the spring gas should be, the way to maintain health. Against the liver ……” three months of spring, is the seasonal season to push out new ideas and sprout life. Heaven and earth are naturally vibrant, and everything seems to be thriving. At this time, the way to maintain health is to go to bed late and get up early (compared to winter), shorten the sleep time, spread your hair, untie your clothes, so that your body is relaxed, relax your steps, walk in the courtyard, make your spirit happy and your mind open, and keep the vitality of everything. This is the way to adapt to the season of spring and maintain the vitality of spring. If you violate the spring vitality, you will damage your liver and make the conditions for providing the summer growth (zhang) of qi insufficient, and you will have cold lesions in summer. Huangdi Nei Jing – Four Qi Tuning Shen Daxue: “summer March, this is called the summer show, the sky and earth, all things flashy, sleep at night and get up early, not tired of the day, so that the will is not angry, so that Huaying into the show, so that the gas can be released, if the love outside, this summer gas should be, the way to raise long. Against it is sad ……” three months of summer, things are born to grow, luxuriant Huaxiu, hot weather, long days and short nights, this time should be in line with the natural Yin and Yang changes, sleep late and get up early (sleep not later than the son of the hour, the dawn that is up), do not feel tired of the long hot days, to make the mood calm and not restless, so that the qi glow The glow, so that the body’s Yang Qi naturally get dissipated, just as the cheerful mood to show outside. This is the law of responding to the summer qi and protecting the body’s ability to grow and flourish. If you violate this law, you will harm your heart qi. Huangdi Nei Jing – Four Qi Tuning Shen Da Lun: “In March of autumn, this is called Rong Ping. The weather to rush, the ground to bright, sleep early and get up early, with the chicken, so that the will is peaceful, in order to slow down the autumn punishment, astringent, so that the autumn qi flat, no outside its will, so that the lung qi clear, this autumn should be, the road to nourish the harvest. Against it is hurt the lungs ……” three months of autumn, is the season when everything is full of fruit and already ripe. In this season, the weather is clear, the wind is strong and sharp, the grass and trees wither, and the earth is clear. People should go to bed early and get up early to rest at the same time as the chickens. Make your emotions stable and calm, so as to cushion the effect of the sanguine Qi of late autumn on people; collect the Shen Qi that has previously been declared outward, so that the body can adapt to the autumn Qi and achieve mutual balance; do not let your emotions leak outward, so as to keep the lung Qi clear and sober. This is the law of the body’s astringent function in accordance with the autumn qi. If you violate this rule, you will harm the lung qi. Huangdi Nei Jing (Yellow Emperor’s Classic of Internal Medicine): “In the third month of winter, this is called closed storage. Water ice chap, no disturbance to the Yang, sleep early and get up late, must wait for daylight, so that the will if the ambush if hidden, if there is a private intention, if there has been obtained, to cold on the warm, no drainage of the skin, so that the gas is taken away, this winter gas should be, the way to nourish the Tibetan. Against it will hurt the kidneys ……” three months of winter, is the season when everything is alive and closed. In this season, the water is frozen, the earth is frozen, so people should not disturb the Yang Qi, to go to bed early and get up late, must wait until daylight appears before getting up (so there is a theoretical basis for staying in bed in winter); so that the emotions like the army ambush, like fish and birds deep hide, like people have privacy, like the heart has gained, etc.; but also away from the cold place, near the warm place, do not let the skin coup open sweat and make a lot of Yang Qi loss. This is the law of conforming to the winter energy and maintaining the body’s closed function. If you violate this rule, you will harm the kidney. Ziwu sleep “Yellow Emperor’s Classic of Internal Medicine” said: “Yang Qi is exhausted then sleep, Yin Qi is exhausted then awake.” Explain that sleep and wake up is the result of the alternation of yin and yang. At night, the yin energy is gradually ShengYang in the human body is hidden, then sleep, and in the morning, the yang energy is gradually prosperous in the body Yang Qi rise, then wake up. The zi zhi (23:00 p.m. to 1:00 a.m.) is the time when yin is at its peak and yang is weak; while the noon (11:00 p.m. to 13:00 p.m.) is the time when yang is at its peak and yin is weak. Ancestral medicine that the son and noon is the time of alternation of yin and yang, but also the human body by the gas “Yin” and “Yang” time, sleep well ziwu sleep, the body is conducive to nourishing Yin, Yang. Ziqi is the heaviest yin time of the day, this time to rest, the most nourishing yin, the best sleep, and the best sleep quality, can play a multiplier effect. This coincides with the theory that the human body needs to enter a deep sleep state before 23:00, as found by modern medical research. Ziqi is also the time when the meridians of Chinese medicine run to the liver and gallbladder, and the time to nourish the liver should be ripe for sleep. If you miss this time of sleep because of staying up late, the liver and gallbladder will not get sufficient rest, which can be manifested as rough skin, dark spots, yellow face, etc. At midday, the time of “he yang” should be a small sleep, rest for about 30 minutes, at most not more than 1 hour. Even if you can’t sleep, you should also “go into silence” so that your body can balance the transition, refresh your mind and replenish your energy.