Burn, Baby, Burn: The Metabolism-Boosting Superset Workout

One-Legged Calf Squat

Targets: Quads and calves

Done while standing on a step with your heel off the edge, this engages 79 percent of your calf muscles.

• Stand on left foot, holding on to back of chair for balance if needed, right leg bent behind you.
• Raise left heel off floor as high as possible, then bend left knee to lower into a single-leg squat.
• Return to standing, then lower heel to floor.
• Do 10 to 12 reps, switch legs and repeat. Then return to the Quadruped. Continue alternating until you've done 3 sets of each exercise.