First of all, from the standpoint of western medicine, staying up late needs to meet the conditions of "forced sleep deprivation", with the emphasis on the word "forbearance". 23 o'clock is not an absolute red line. If you get up at seven or eight in the morning according to the living habits of ordinary people and don't get extra sleep during the day, then whether you stay up late or stay up late at night, you can count as staying up late.
Generally speaking, most adults need 7 to 9 hours. As long as you have enough sleep time and good sleep quality every day, you won't stay up late the next day if you are full of energy and don't feel sleepy.
For example, you are used to going to bed at 2 am every day, getting up at 10 in the morning, sleeping for 8 hours and being full of energy. No matter the length or quality of sleep, it is not staying up late.
From the standpoint of Chinese medicine, the ideal time to sleep is 1 1 p.m. At night 1 1 If you don't sleep, you stay up late.
In the theory of traditional Chinese medicine, from 1 1 in the evening to 1 in the morning, the liver and gallbladder are in charge of detoxification. Chinese medicine believes that at this time, the body can be completely relaxed and the toxins accumulated in the body can be discharged. On the contrary, if the body does not rest at this time, toxins will accumulate in the body, which will naturally lead to diseases in the long run.
In short, staying up late is not a good habit. It doesn't matter if you stay up late occasionally. The body has the ability to adjust and recover. However, if you stay up late for a long time, the impact is very wide.
Staying up late will make your immunity decline, autonomic nervous system disorder and endocrine disorder. For men, it will affect the quality and quantity of sperm. For women, it will cause irregular menstruation, even infertility, dry skin, panda eyes on the face and brain damage.
Staying up late means staying up late at night, usually after eleven o'clock in the evening, and still feeling refreshed or not sleepy and insomnia. In another case, I can't sleep because something is delayed, such as studying late or repeating my work during the day. This is also called staying up late. Staying up late is not good for teenagers and affects their normal development. So try not to stay up late, keep a normal routine, and fall asleep before 10 at night, which is good for human metabolism.