Electrical currents activate muscles therapeutically.

Electrical muscle stimulation, also known as neuromuscular electrical stimulation or electromyostimulation, is the elicitation of muscle contraction using electric impulses.

A transcutaneous electrical nerve stimulation (TENS or TNS) is a device that produces mild electric current to stimulate the nerves for therapeutic purposes.

Electrical brain stimulation, also referred to as focal brain stimulation, is a form of electrotherapy used as a technique in research and clinical neurobiology to stimulate a neuron or neural network in the brain through the direct or indirect excitation of its cell membrane by using an electric current.