Abdominal Muscle Stimulator EMS BeltThe Electric Muscle Stimulator System Belt Ab Belt Toning system cleared by the FDA for Toning, Firming and Strengthening the stomach muscles. With The Electric Muscle Stimulator System Belt, you can train your abs even if you're too busy or too tired for a traditional workout. Just slip on the comfortable toning ab belt and the clinically demonstrated, patented medical grade technology stimulates the nerves that make your muscles contract and relax.