Instructions:

1. Stand with your feet shoulder-width apart and hold a dumbbell in each hand.
2. Extend your arms straight out to the sides at shoulder height, palms facing down.
3. Keeping your arms straight, slowly rotate your arms in a circular motion, bringing the dumbbells in front of your body and then overhead.
4. Continue the circular motion, bringing the dumbbells back down to the starting position.
5. Repeat for the desired number of repetitions.