2. Develop a good sitting posture and protect your eyesight. If you sit correctly, there won't be too many nearsighted children, and there won't be a hunchback phenomenon.
3. Protect your teeth. Pupils also need to brush their teeth at least twice a day, so that their teeth will not be decayed.
4. Pay attention to personal hygiene. Pupils are often ill because they have not handled their own health problems properly.
5. Exercise regularly. Sports can change students' temperament and mood. In the constant exercise, the defense ability of primary school students is gradually enhanced.