ProForm Activator V5 Vibration Training Machine Activator V5 is designed to provide ability to maximize your workout, so you burn fat and build muscle mass quicker With ability to contract muscles up to 45 times per second, whole body vibration helps build muscle, improve performance, and increase bone density Slip-resistant platform surface and stabilizing handlebar Digital console with 30-, 45-, and 60-second timer; selectable vibration intensity of 25-, 30-, and 35-hertz Workout DVD included