Sit-ups generally do not affect height growth. 1. Correct and effective sit-ups can exercise the abdominal muscles and enhance physical fitness, but they have little effect on height growth. Unstandardized sit-ups may lead to cervical and lumbar spine injuries, so you need to standardize your movements and protect your joints when performing the exercise. 2. The development of height is mainly affected by genetics, sleep, nutrition and exercise, so it is not just about exercise. 3. Appropriate sports, balanced nutrition and good sleep habits are all conducive to height growth. For those who have the need for height growth, it is recommended to do more upward movement, such as jumping rope, playing basketball, playing volleyball and so on. If the pediatric or adolescent shows obvious height growth disorder, it is recommended to go to the hospital for standardized examination.