NMES (Neuromuscular Electrical Stimulation) is a related technology that uses electrical pulses to stimulate muscles. While TENS primarily targets nerves to alleviate pain, NMES targets muscles to improve muscle strength, reduce muscle spasms, and promote muscle re-education. NMES works by sending electrical impulses to the motor nerves, which in turn stimulate the muscle fibers. This can be beneficial for people with muscle weakness, muscle atrophy, or nerve injuries. NMES devices are often used by physical therapists to help patients recover from injuries or surgeries. They can also be used at home under the supervision of a healthcare professional.