Staying up late at night to catch up on sleep during the day can help restore energy, but it can’t eliminate the damage done to the body by staying up late and can’t make up for it. The human body follows the laws of nature, there is a relatively stable biological clock, 23:00-04:00 body secretion of melatonin reaches its peak, to help the body enter a deep sleep, so that the body and brain to restore energy. And after staying up late to make up sleep during the day is very difficult to enter a deep sleep, continued light sleep on the energy recovery is limited. Long-term staying up late is more harmful to the body, and the damage to the body is irreversible, will cause headaches, fat, mental weakness, but also increase the risk of cardiovascular disease. Therefore, it is recommended to try to regular routine, avoid staying up late, go to sleep before 23:00, and ensure 7-9 hours of sleep every day.