Does the pulley lead to the inner eight or the outer eight?

According to the relevant information of the query, neither the inner eight nor the outer eight will be caused. Jia Zheng, director of the Orthopaedics Department of Henan Provincial People's Hospital, said that when playing roller skating, the knee joint and ankle joint need to support the body with appropriate strength, which has a good exercise effect on the support ability and flexibility of the joint. When playing roller skating, the muscles of the waist, hips, thighs and ankles are exerting strength, so that the muscles can be exercised. Moderate exercise can burn fat and prevent childhood obesity. There is no scientific basis for saying that it will cause eight inside and eight outside, and this situation has never been seen in clinic.