202 1 The top cities in fitness industry 10 are Shanghai, Guangzhou, Chengdu, Beijing, Hangzhou, Nanjing, Shenzhen, Changsha, Chongqing and Wuhan. According to relevant public information, fitness is a kind of exercise, including unarmed aerobics, rhythmic gymnastics, rhythmic gymnastics and various self-resistance movements. Gymnastics and yoga enhance strength and flexibility, increase endurance, and improve the ability to coordinate and control all parts of the body, thus making the body strong. To relieve stress, exercise three times a week. Swimming, brisk walking, jogging, cycling and aerobic exercise can all exercise the heart. The benefits of aerobic exercise can exercise the heart and lungs, enhance the function of circulatory system, burn fat, increase vital capacity, lower blood pressure, prevent diabetes and reduce the occurrence of heart disease.