Yes the Electrical Muscle Stimulation is an internationally accepted and proven way of treating musclar injuries.It works by sending electronic pulses to muscles needing treatment;this causes the muscles to exercise passively.This foot massager uses Electrical Muscle Stimulation applied primarily through two large foot pads to stimulate the soles of the feet.These gentle electrical pulses improves blood circulation and relax tense muscles,relieving joint and muscle pain,reduces swollen feet and ankles to help you get back to a normal activity level.