2. Cycling: Cycling is an aerobic exercise to avoid knee joint injury, which can effectively protect the damaged knee joint. This is an energy training course.

It is suitable for improving muscle tension, improving joint function and removing part of accumulated body fat, which can be carried out by various professional muscle tension training machines and equipment.

3. Relax training subjects

Suitable for relaxing mental essence and limbs, relieving fatigue and preventing various psychosomatic diseases. You can use walking, Tai Chi, relaxation gymnastics, fitness, Qigong master and massage.

3. Running: Running outdoors is healthier, enhances physical fitness and is good for physical and mental health.

4. Dancing: Dancing is a good aerobic exercise. Dancing can not only exercise, enhance physical fitness, but also make people feel happy.