From a medical point of view, it is recommended to go to sleep before 11:00 p.m. Sleeping after 11:00 p.m. is considered staying up late. Sleep is very important for health, and getting enough sleep helps maintain the health of the body’s systems and helps maintain a better mental state. Clinical medicine believes that 11:00 pm to 1:00 am is the time period for the body to repair itself. If the body has not fallen asleep during this period, the functions of the body are still in operation and cannot be restored, which will lead to poor concentration and mental state the next day, affecting normal learning and work. Staying up late for a long time can also increase the burden on the internal organs of the patient, easily causing cardiovascular disease, liver disease, etc. Since it is the norm for young people to stay up late for a long time, it is recommended that for the sake of their health, they should try to go to bed before 11:00 at night to avoid affecting their skin and internal health.