Turn around. Okay back rolling is to use back massager, massage ball, yoga ball and other tools to roll back and forth on the back muscles and skin, stimulate the muscles and tissues of the back, promote blood circulation and fat metabolism, and achieve the purpose of losing weight. The advantage of back rolling is that it is easy to operate and master, and it can be done at home without too much time and space. However, the operation of back-beating is complicated and requires professional guidance and skills, otherwise it is easy to cause injuries.