10 Minute Solution: Fitness Ball

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.