Plyometrics: Five power-building exercises to add to your workout

Do these four moves three times a week, and you'll see more definition in a month or less. For faster results, add 20 minutes of cardio.

1. Scissor kick lunges Lunge with one arm pointed toward ceiling and the other to the forward. Jump up and switch legs and arms, landing in a lunge with opposite food forward. Do 20 to 30 reps.

Perfect your form: While lunging, keep knee in line with middle toes. Dial it down: Perform lunges without the jump. Amp it up: Increase your speed. Do 10 more reps. Targets: Quads, glutes, hamstrings, calves and core.

2. Quick-fire burpees Bend and place hands on the floor. Jump feet into plank, then jump feet back toward hands. Now stand and jump up with arms raised. Repeat sequence for 60 seconds.

Perfect your form: Avoid dipping hips in plank. Dial it down: Step, not jump, your feet into plank and walk them back up and stand. Amp it up: Do a push-up after jumping into plank. Targets: Upper body, core, calves and glutes.

3. Stepping-stool kick Start in boxer's stance with left knee raised. Drive left foot down to ground and springboard off left foot to kick your right leg forward. Repeat for 60 seconds switching between legs.

Perfect your form: Avoid locking knees. Dial it down: Do forward kicks without the jump. Amp it up: Add two jabs for a killer kick-boxing combo. Targets: Core, glutes, quads and hamstrings.

4. Skater jumps Start on right foot, hands on hips, left leg behind you. Take a wide leap to the left. Shift weight to left foot, drawing arms up and right leg behind you. Repeat for 60 seconds.

Perfect your form: Keep back straight and chin away from chest. Dial it down: Skip the jump and lunge from side to side. Amp it up: Reach down across your body and touch toes between jumps. Targets: Core and legs.

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