Stand with your feet hips-width distance apart and arms by your sides. For more a challenge, hold a 5- to 15-pound dumbbell in each hand.
Take a large step backward with your right leg coming into a lunge, with both knees bent to 90 degrees, knee gently tapping the floor. Your front knee should be directly above your ankle.
Push your left heel into the ground as you step your right foot forward to the starting position. Repeat stepping back with the left leg.
Continue alternating sides for a total of 10 reps.