Hold a dumbbell in each hand (or a kettlebell in both), and lift your right foot slightly off the ground.
Keep your back flat, and bend at your hips while raising your right leg, which should stay in line with your body. The dumbbells will lower toward the ground.
With your back straight, return upright, coming to your starting position. This completes one rep. Make this move harder by keeping your right foot off the ground as you go through your reps.