To perform exercises to strengthen the muscles of the legs, it is necessary to exercise according to the specific location of the leg muscles. In the thigh position, the front side of the muscle is called quadriceps, quadriceps exercise, mainly by taking measures to lift the calf, such as putting a weight on top of the ankle joint, and then lifting the calf, so that through the exercise of weight, can effectively increase the muscle strength of the quadriceps muscle on the front side of the thigh. When practicing the muscle strength of the posterior biceps femoris and semitendinosus semimembranosus, you can lie on your back and lift the entire leg, which can increase the strength of the posterior muscles. The position of the thighs and the adductor muscles, the adductor muscle exercise is mainly through the leg inward, gradual exercise, but also to increase the strength. The adductor muscles include the vastus fasciae tensor and the quadriceps lateralis femoris, which can also significantly increase the thickness of the muscles by exercising the leg in an adductor manner. In the calf area, the front side of the calf muscles can be put a weight above the ankle joint, so that when the foot is lifted can effectively improve the muscle strength of the front side of the calf; the muscle strength of the rear side is mainly taken with the toe on the ground, and then gradually increase the force of stepping on the ground, which can effectively exercise the muscle strength of the gastrocnemius and flounder muscles of the rear side of the calf.