Staying up late now seems to be a popular lifestyle, many people do not have enough time during the day, so they ask for time to sleep and postpone going to bed until after 11 pm. If it is necessary for work and study or important things is just, entertainment and leisure such as Internet, watching TV series, playing games, brushing microblogging WeChat, karaoke, etc., have also become the reason for people to sleep late. Earlier this year, General Secretary Xi Jinping at a meeting in the Great Hall of the People, will be his own youth as a county party secretary often stay up late sick personal experience to share with everyone, cautioning people not to stay up late. “There is an inherent passion, but there is also a need to be calm and unhurried.” It reflects the central leadership’s concern for people’s health. About 1/3 of a person’s life is spent in sleep. When people are in a sleep state, it allows their brain and body to rest, recuperate and recover, which is a long-term balanced process. If we only charge 50% at night and release 100% during the day, where does the 50% come from? It is necessary to borrow from the five organs. From the perspective of Chinese medicine, sleep is related to the circulation of the body’s Wei Qi and the strength and weakness of Yin and Yang. 11:00 pm to 1:00 am is the liver detoxification time, is also the spine blood production time, must be asleep, should not stay up late. Long periods of sleep deprivation can cause harm to the liver, and sleepless nights can lead to abnormal liver function, which is already common knowledge. Therefore, in addition to protecting the liver by not drinking excessively, controlling emotions, and avoiding hepatitis B infection, we must also pay attention to sleep. The human body has a biological clock that must follow the laws of nature, “sunrise and rest at sunset. Modern medicine also believes that 11 p.m. to 6 a.m. the next day this time, is the “golden 7 hours” of sleep. Network “stay up late health survey” shows that more than 50% of netizens said often or always after zero hours to fall asleep, 18% of people usually more than 1:00 am to sleep. The old saying “one night without sleep, ten nights without waking up”, staying up late is to sleep to time, then the debt will not have to pay? Many people usually stay up late lack of sleep, to the weekend or holidays on the fierce complement, a day of sleep, breakfast, lunch is often omitted in sleep. Is this right or wrong? Long-term lack of sleep deprives the gastrointestinal tract of the opportunity to rest, the immune system is reduced, so that the endocrine hormone levels are disrupted, increasing the possibility of diabetes and other diseases. People who stay up late cause abnormal vasoconstriction, increasing the likelihood of cardiovascular disease, hypertension and stroke. It also leads to insomnia, forgetfulness, irritability, anxiety, neurasthenia and other problems and other symptoms. It can make the skin dull and rough, serious damage to the skin, as well as overload eye damage to the eyes. So “borrowing money is easy to pay back”, the truth is true and true. The body is your own, health is the most important, when you are young or in good physical condition may feel indifferent, but over time on the body to cause substantial damage, it is too late to regret. The damage caused is a long process, the recovery of health is also a long process, the happy life after work and study to start from the little by little, from the attention to sleep to do.