There are more hazards of staying up late, including decreased immunity, lack of sleep, endocrine disruption, etc. The details are as follows: 1, decreased immunity: the normal physiological rhythm of the human body is disrupted, the body’s immunity will decline, and may also cause other diseases, which are detrimental to the body; 2, insufficient sleep: memory will decline, and the efficiency of work and study will also be affected to a certain extent; 3, endocrine disruption: androgens will secrete more, and skin acne may be more pronounced; 4, poor spirit: after staying up late in the morning, the state is not good, but also affect the next day’s mental state.