Stop wasting your time with moves that only work one muscle group! This new circuit plan from fitness expert and certified trainer Jessica Smith fires up your fat-burning and builds lean muscle in your abs, butt, and legs—all at the same time! You don't need any equipment, just your own body and a little bit of floor space.
Workout details: Do 15 reps of each exercise in the circuit one after another with little or no rest in between. After you finish the last exercise, repeat the entire circuit 2 more times so you're performing it a total of 3 times.