The Sport-Elec System is the time-saving way to firm abs - without doing tiresome sit-ups or crunches. Approved by the FDA for ab firming, toning and shaping, the Sport-Elec System stimulates the muscles in your abs, arms and legs without having to do any exercise. It trains your muscles for you, while you're working, out running errands or relaxing. The system stimulates the nerves which work the body's muscles. When you wear the system over time, the resulting muscle contractions make your muscles firmer and stronger.