ISI® is a 50-minute, low-impact, high-intensity, strength-based workout. Each workout is designed and led by a certified coach giving you one-on-one attention within a team setting. We focus on simple, but dynamic movements that will help you burn fat, build muscle and gain both confidence and strength. Through functional movements, every ISI® workout is designed to target different muscle groups, deliver measurable results and help you Train For Life®.