No time to exercise? We have the solution for you! Instructor Kimberly Spreen has developed 5 distinctive, ultra-effective Fitness Ball workouts, each one specially-designed to tighten and tone your body. And the real secret of the ball is that it works your midsection without you even knowing it. Just by maintaining balance on the ball, you constantly activate your core muscles so all the workouts will help give you leaner, flatter abs. You can split these 10 minute sections into 5 separate workouts, or mix and match to hit your own unique problem areas... or do all of them together!