Adduction exercises the muscles of the inner thigh, abduction exercises the muscles of the outer thigh, the front legs are lifted to exercise the muscles of the front thigh, and the rear legs are hooked to exercise the muscles of the back thigh. The above exercises will be accompanied by strengthening the muscles around the knee joint. There are barbells, that is, 45 degrees and a half squats and 90 degrees squats, all of which are ok. I have tried barbells, leg lifts, Huck squats, mechanical leg stretchers, prone leg bending trainers, sitting legs and lifting heels, etc. I feel that the effect is not very good and I am very tired. The abductor and adductor muscles of the legs are recently adopted, and they have been used all the time, and they feel ok. Because my goal is mainly to practice my legs, I must pay attention to the intensity of training at the beginning, otherwise you may not have the will to continue. In addition, if you just start training, you should pay attention to the warm-up before training, otherwise it is easy to strain your muscles, especially when you are abduction. If you are eager to lose weight, something may happen. In short, if the equipment is used reasonably according to its own situation, the effect is still good.