Early to bed and early to rise is very beneficial to human health, and it is usually appropriate to wake up from 5:00 to 7:00 in the morning. The human organs need rest and conditioning after a day of exertion. Usually 9:00-11:00 pm is the detoxification time of the lymphatic organs; 11:00 pm-1:00 am is the detoxification time of the liver, the best detoxification effect during sleep, so it is most recommended to sleep at 9:30-10:00 pm. At the same time after 5:00 is the colon detoxification time, can be after 5:00 can get up to defecate, 5:00-7:00 points after getting up can be sports appropriate sports, and at this time the air is fresh, conducive to metabolism, there is a certain role of lung care. In addition, to develop good sleep habits, sleep 7-8 hours a day, is conducive to prolong life, health, should try to avoid staying up late, before going to bed should not watch exciting television programs, read books or think about difficult questions.