Get up early and go to bed late in spring. The season when everything begins to grow is spring, and the qi of heaven and earth begins to germinate from this season, so the sleeping principle in spring should be "lying at night and getting up early". Generally, you can fall asleep at about 10 at night, and it is more appropriate to get up at about 6 am, which is very beneficial to the growth of yang in the body.
Sleep time is the shortest in summer. In summer, everything is at its peak, and so are people. With the vitality gradually reaching its peak, people's waking time is greatly increased, and the average person can sleep in summer in only five or six hours, so it is more necessary to "lie down at night and get up early" in summer. Because the daytime is the longest in a year in summer, you should stay up late, and you can fall asleep around 1 1, but don't change the early morning time.
Get up early and go to bed early in autumn. If the "fate" in spring and the "length" in summer are well done, then the human body will reach the most balanced state in the four seasons in autumn. At this time, the state of the human body changes from hyperactivity in summer to introversion in autumn, so it is best to go to bed early if possible, and sleep for at least 8 hours every day, which is very beneficial to the "collection" of yin essence. Although autumn begins to converge, there is still no need to "hide", so when you go to bed early, you should pay attention to getting up early to adapt to the relaxation of yang.
Get up late and go to bed early in winter. Winter is mainly "hiding", and most animals and plants are in hibernation, so as to save energy and prepare for next year's growth. The human body should also reduce its activities appropriately to conform to the characteristics of nature, so as not to disturb the yang spirit and make the yin essence suffer losses. "Go to bed early and get up late" is the sleeping principle of this season, and it is best to get up at dawn. But don't get up too late, otherwise you can't stretch the rising yang, which is not good for the balance of yin and yang in the body.
Although the schedules of the four seasons are different, the taboo of health preservation is "going to bed late and getting up late". The law of human body adapting to natural changes will be broken by staying up late and getting up late, so staying up late and staying in bed will make your mind groggy and your body tired. The overall sleep time is 7 ~ 9 hours.