If it's time kick your fitness life up a notch then this workout will push you to the next level. Mixing plyometric moves with challenging variations of weight-training exercises means you'll be burning more calories in less time. It's hard, but it's worth it. Print this poster, grab your weights, and get your sweat on!
Directions: warm up with five minutes of light cardio, then repeat each three-exercise circuit three times. Start with 10 reps of each exercise, building up to 15 reps of each move as you get stronger. Start with five-pound dumbbells, and work up to eight- or 10-pound weights to increase the challenge.