You can buy a fitness ball. Fitness ball is a novel, interesting and special sport. Suitable for everyone to exercise, especially for the spine and pelvis. Fitness ball has good function of injury recovery and rehabilitation. Fitness balls are safer during exercise, and can also improve people's flexibility, strength, balance, posture and cardiopulmonary function.

Fitness balls used in ball games are generally made of PVC materials harmless to human body, with a diameter of 60-70 cm and a hollow structure inside, which can bear up to 300 kg of pressure.

Ball games are suitable for a wide range of people, and a lot of strength training is not suitable for older and weaker people. When playing ball games, the athlete's heart rate is kept between 1 15- 135 times per minute, and people will not feel wheezing, but the calories consumed will reach 3000-6000 calories every 45 minutes.