You don't need any equipment to tone, strengthen, and shape your booty. This 10-minute workout from Katie Dunlop of Love Sweat Fitness [1] gets the job done fast. You'll be surprised how little time it takes to get your backside burning.

On Anna: Show Me Your Mumu top [2], Sweaty Betty bra and tights [3], and Dr. Scholl's shoes [4].
On Katie: Onzie outfit [5] and Athletic Propulsion Labs (APL) shoes [6].
Yoga Design Lab mats [7]