proper exercise at ordinary times can strengthen the body and enhance the physical development, and it is not easy to get sick. What are three types of joints? Three categories of sports types. Sports are generally divided into three categories:
1. Aerobic exercise.
Aerobic exercise is also called endurance exercise. It is characterized by sufficient oxygen supply during exercise. Therefore, the intensity of sports is generally not too large, mostly light and medium intensity sports, such as walking, cycling, swimming, bowling, etc. Aerobic exercise can not only improve people's cardiopulmonary function, enhance endurance quality, but also consume the body's excess fat and maintain a suitable weight. It is the most commonly used form of exercise in weight loss exercise.
2. Anaerobic exercise.
Anaerobic exercise is also called strength exercise or resistance exercise. It is characterized by high strength. Different exercise methods can mobilize muscle activities of different parts, such as weight lifting to exercise upper limb muscles; jumping or fast running to exercise lower limb muscles and so on. Strength exercise can increase muscle weight and muscle strength, and cultivate a body that is not easy to gain weight.
3. Flexion and extension.
Flexion and extension movement is also called preparation movement or relaxation movement. It's a slow, soft, rhythmic exercise that increases muscle flexibility and prevents muscle and joint damage. Relaxation exercise is usually carried out before and after exercise, so it is also called warm-up exercise before exercise and finishing exercise after exercise.