Dumbbell Cuban Rotation

How to do it

1. Stand tall holding a light dumbbell in each hand, palms facing down.
2. Raise your upper arms to shoulder height with the elbows bent 90 degrees, so the forearms point down toward the floor.
3. Keeping the upper arms fixed and the elbows still bent 90 degrees, rotate the shoulders to bring the dumbbells up until the forearms point straight overhead.
4. Pause briefly at the top with the forearms vertical.
5. Reverse the motion under control back to the forearms pointing down.
6. Repeat for the recommended number of repetitions, keeping the upper arms still throughout.