High school students are suitable for aerobic exercise and strength training to promote physical health and enhance muscle strength. Here are some fitness exercises suitable for high school students:

1. Jogging or brisk walking: This is a simple and effective aerobic exercise, which can improve cardiopulmonary function and burn calories.

2. Swimming: Swimming is a systemic aerobic exercise, which can exercise all muscle groups and has little effect on joints.

3. Skipping rope: Skipping rope is an efficient aerobic exercise, which can improve cardiopulmonary function and coordination.

4. Team sports such as basketball, football and volleyball. These team sports can exercise physical fitness and cultivate cooperative spirit and team consciousness.

5. Yoga or Pilates: These exercises can improve flexibility, balance and core strength, and also help to relax.

6. Gym training: High school students can do some basic strength training in the gym, such as squat, bench press and pull-ups. , enhance muscle strength and shape the body.

No matter which exercise mode you choose, you should pay attention to moderation and safety. Before starting any new exercise, it is best to consult a doctor or a professional fitness coach.