This month, Complete Fitness personal trainer Jane Grieme recommends a move that targets your butt, thighs, and core. Plyometric squat jumps offer the same benefits of standard squats, like full-body strength training, core stabilization, and tendon and ligaments strengthening – plus the added benefits of balance and coordination. Begin by squatting down, and bending your knees to at least 90 degrees. Jump up and land softly again in the squat position. Use the strength in your legs and butt to jump up explosively. Remember to land as softly as you can with your knees bent; keep your weight over your heels. Trainer Jane literally takes this move to another level by using the stair stepper.