Hold two dumbbells in both hands, and lift your left foot slightly off the ground.
Keeping your back neutral, lean your entire torso forward while raising your left leg, which should stay in line with your body. The dumbbells will lower toward the ground. Keep your shoulder blades pulled down your back.
With your back straight, return upright, coming to your starting position. This completes one rep. Maximize this move by keeping your right foot off the ground as you go through your reps.