The 8-character puller has more functions than the 1 character puller. Advantages of using the word "stretcher" Exercising muscles is the most important function of the stretcher. It can not only exercise the biceps brachii and triceps brachii of the arm, latissimus dorsi and pectoral muscles of the back, but also help to exercise the leg muscles. There are many ways to use the figure-eight stretcher, and the most commonly used one is the wall-mounted stretcher. This method is mainly to fix the stretcher at a certain position on the wall, and then extend our arms backwards and forwards. This method is actually to form a resistance on the back, which has an exercise effect on our back muscles, chest muscles and arms. Many people with hunchbacks can be trained in this way, and their hunchbacks will be corrected quickly.