Can electrical stimulation actually make muscles contract, and how is it different from a normal workout? electric muscle stimulator physical therapy technology uses controlled electrical impulses to stimulate targeted muscles and produce contractions. While EMS has different applications depending on the purpose and setting, its use for body contouring focuses on targeted muscle stimulation. At The Body Theory Company, treatment planning considers your goals, target area, suitability, and expectations. A consultation can help you understand how the technology works, what happens during a session, and what outcomes may realistically be expected. Understanding the difference between muscle stimulation, fitness training, and rehabilitation can help you choose the right approach for your needs.