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Assume a wide split stance with your left leg forward, right leg back, and hold a set of dumbbells at your sides. Bend both knees and drop straight down toward the floor until both knees and hips make 90-degree angles, then push off your left foot, and as you extend your right leg, straighten your left and lift it behind you as you press your arms back. Replace your left foot on the floor and go right into the next rep. Complete all reps on one side, then switch.