It is usually considered best to go to bed at 11 p.m. and get up at 6:30 a.m. in the winter. Sleep is an important part of the body’s recovery, integration and consolidation of memory, and is an indispensable part of human health. According to the theory of Chinese medicine, in spring and summer, it is better to go to bed late and get up early, need to sleep 5-7 hours a day, can go to bed at 22-23 o’clock and get up at 6-7 o’clock; in winter, it is better to go to bed early and get up late, need to sleep 8-9 hours a day, should go to bed at 21.30-22.30 o’clock and get up at 6.30-7.30 o’clock. Chinese medicine believes that the morning 5-7 am is the body’s most vigorous large intestine meridian, the human body needs to metabolism of the turbidity out of the body, at this time if you do not get up, the large intestine does not get full activity, can not be well completed turbidity function, so that turbidity stays in the formation of toxins, is not conducive to human health. In addition, after waking up in the morning, the human body from the state of inhibition into a state of excitement requires a process, it is recommended to avoid getting up immediately to dress, wash, so as to avoid dizziness, blurred vision and other discomforts.