Stand on your left leg and lift your right knee up until it is level with your hip. Holding a dumbbell in each hand, raise your arms out to the side until your upper arms are parallel to the ground. Bend your elbows to 90 degrees.
Maintaining a strong sense of balance, rotate your upper arms forward to bring your fists to the floor, then rotate the upper arms backward to bring the fists up.
Do not lower or raise your upper arms; keep them parallel to the floor. This completes one rep.