Muscle leg is a condition in which the body removes fat and then the muscles in the legs become too rich and form a large amount of muscle mass called muscle leg. Muscle leg is not a disease, but a muscle aggregation or muscular development. According to the patient’s symptoms and signs to determine whether there is a disease, if it is a physiological or compensatory muscle growth, it does not mean it is a disease, so muscle leg is not a disease, but a normal phenomenon. If the muscle is too hyperplastic or too fatty, it will help a lot for the strength of the muscle. The strength of the muscle is very strong, so that the running start may be very fast. The muscle strength of the leg will be affected if the muscle is too flabby or too strained.