MET has many clinical uses such as lengthening a shortened muscle, contractures, or spastic muscle: to strengthen a weakened muscle or group of muscles; and to mobilize an articulation with restricted mobility. The function of any articulation in the body that can be moved by voluntary muscle action, either directly or indirectly, can be influenced by muscle energy procedures. Muscle effort is used to move the joint, and normal physiology can be restored to the muscle when normal joint motion is restored. These techniques are valuable forms of manual medicine therapy with immediate therapeutic effects that are physiologically and anatomically safe.