During EMS training, electrodes will be placed in 8 muscle groups of the body ( depends which producut you choose ) , and electrical pulses will directly stimulate the muscle fibers of the target. This will help strengthen muscles, which will improve body shape, increase endurance and strength, tighten skin and increase metabolism, and increase calorie consumption as muscle mass increases.
Keep in mind : You still have to eat healthy . If you eat junk food Ems wont help you