Electrical stimulation machines are devices that use electrical impulses to stimulate muscles and nerves. They are commonly used in physical therapy to help patients recover from injuries, reduce pain, and improve muscle strength. These machines can be adjusted to deliver different levels of stimulation, making them versatile for various treatment needs. These machines often come in different forms, such as TENS (Transcutaneous Electrical Nerve Stimulation) units and EMS (Electrical Muscle Stimulation) devices. TENS units primarily focus on pain relief by blocking pain signals, while EMS devices are used to enhance muscle contractions and rehabilitation. Both types are non-invasive and can be used at home or in clinical settings.