Weighted-ball exercises designed to burn calories as they tighten your abdominals. The ball helps boost the fat-burning intensity while targeting your core muscles. You get a variety of powerful, squat-based moves (often using kettlebell-style acceleration/deceleration). They’re all full range-of-motion in every direction — laterally, diagonally and vertically. The introductory workout is pure toning; it carefully teaches the techniques for Michael’s “sexy seven” exercises.