Neuromuscular Electrical Muscle Stimulation(NEMS) is a treatment modality that elicits muscle contraction using electric impulses. The impulses are generated by a device and delivered through electrode pads on the skin in direct proximity to the muscles to be stimulated. The impulses mimic the action potential coming from the central nervous system, causing the muscles to contract. This modality has the potential to serve as a strength training tool for healthy subjects and athletes; as a rehabilitation and preventive tool for partially or totally immobilized patients; and as a post-exercise recovery tool for athletes. This system can be used for rehabilitation purposes, such as the prevention of disuse muscle atrophy in post-surgical or immobilized patients. This is distinct from transcutaneous electrical nerve stimulation (TENS), in which an electric current is used for pain therapy. A number of coaches regularly use professional EMS devices as an integral part of the training of their athletes. Our physical therapist has done research into the effects of NEMS on the performance of baseball pitchers and their ability to recover between innings. These systems have been used on all varieties of amatuer and professional athletes, including those participating in the Olympics.