CONTROL™ The Metabolic Booster. This class is in the Strength component of The System. It uses a combination of dynamic & isolated strength to sculpt & build muscles, while decreasing your BMI & increasing your metabolism. We strategically use a variety of strength methods, blending explosive, endurance, isolated, and functional strength movements. This keeps your muscles from mastering the moves, so your body is continuously challenged, giving you more effective & efficient results.