Electro muscle stimulator, electro muscle stimulation or neuromuscular stimulation or electrical stimulation, is the generation of muscle contraction using electric impulses. the pulses are generated in a device that is applied with electrodes on the skin close to the muscles that are intended to stimulate. The impulses mimic the action potential coming from the central nervous system, causing muscle contraction. The electrodes are usually adhered to the skin. The EEM is a form of electrotherapy or muscle training. Is cited by several authors as a complementary technique for sports training.