Yes, getting old is very easy. Most internal organs start to work at night to detoxify the human body. If you don't get a good rest at night for a long time, women are prone to deficiency of both qi and blood, decreased immunity, freckles, acne, oral ulcers, yellow complexion, body fat or emaciation. Sleeping on time can ensure the normal completion of your body's metabolism. Of course, not everyone has the same constitution. People who are in good health and young have natural resistance to staying up late. As they get older, they will look much older than people with the same physique. The reasons are as follows: 1. 9- 1 1 Night is the time for the immune system (lymph) to detoxify, so be quiet or listen to music during this time. Second, at night 1 1- in the morning 1, liver detoxification needs to be carried out while sleeping. Third, in the morning 1-3, the detoxification of gallbladder is the same. Fourth, at 3-5 am, the lungs are detoxified. This is why people who cough the most during this time, because the detoxification has reached the lungs; Drugs should not be used to avoid inhibiting the elimination of waste. 5. 5-7 in the morning, the large intestine is detoxified, and you should go to the toilet to defecate. 6. At 7-9 am, when the small intestine absorbs a lot of nutrients, it is time to eat breakfast. It is best for patients to eat early, before 6: 30, and before 7: 30 for health-preserving people. People who don't eat breakfast should change their habits, even if it is postponed until 9 o'clock or 10, it is better than not eating at all. Seven, midnight to 4 o' clock in the morning is the stage of spinal cord hematopoiesis, so you must sleep soundly and don't stay up late.