Electric muscle stimulation (EMS) machines, also known as neuromuscular electrical stimulation devices, utilize electrical impulses to contract muscles, mimicking the body's natural muscle contractions. These devices are designed to improve muscle strength, tone, and endurance, making them a popular choice for athletes, fitness enthusiasts, and individuals undergoing physical rehabilitation. By targeting specific muscle groups, EMS machines can effectively enhance muscle growth and aid in recovery from injury or surgery. Additionally, they can be used to alleviate muscle tension and promote relaxation. With adjustable settings to accommodate different intensity levels, EMS machines offer a customizable solution for enhancing overall fitness and well-being.