First, junior high school students should not stay up late when they are growing up. Physical health is much more important than academic performance.

Second, junior high school students stay up late, the most obvious thing is that their height will be affected. Moreover, lack of sleep greatly reduces the learning efficiency during the day.

Third, if you study at night, you'd better take a nap. Napping is the best habit.

Fourth, don't eat to make up for sleep. Supplementing some vitamins can make up for the decline of immune function caused by staying up late.

May the children have enough sleep.