Gaiam MARI WINSOR'S FLAT ABS PILATES DVD Mari Winsor’s Flat Abs Pilates DVD shows you the fastest most effective ways to get the defined, sleek core you have always wanted. America’s bestselling Pilates instructor, Mari Winsor helps you sculpt a leaner, stronger waistline working every angle including those hard-to-reach core muscles. Learn proper spinal alignment for a healthier back and posture. DVD includes Flat Abs (20 min.), Abs Definition (20 min.) and bonus downloadable Pilates Total Body Workout (10 min.)