Regardless of seasonal changes, according to the rhythm of human biological clock, 23: 00-24: 00 is a night sleep period. Under normal circumstances, you should relax and fall asleep at 23: 00. If you fall asleep after this time, you will stay up late. People who occasionally stay up late can make up for the lost sleep time by taking a lunch break during the day 1 hour, but staying up late often is not good for their health.

People who often stay up late are prone to migraine. On the second day after staying up late, I often feel dizzy, unable to concentrate and even have a headache when I go to work or attend classes during the day. Staying up late for a long time will cause a significant decline in memory.

Staying up late for a long time will cause dark circles and bags under the eyes, which will directly affect the complexion of the face and make people look older. Continuing to work when you should relax and rest will lead to poor blood circulation around your eyes, resulting in dark circles and even bloodshot eyes. In addition, the female friend's skin is dry, and spots and wrinkles creep up on her face, which is easy to grow acne.