In order to perform this movement safely, be sure to choose an appropriate weight and maintain good form throughout the movement.
- Starting position: standing with feet about shoulder-width apart, core engaged, arms extended overhead, wrists straight and grasping the dumbbell firmly.
- Slowly bend your elbows so that the dumbbell lowers behind your head, keeping your upper arms stationary near your ears. Do not allow your elbows to flare out to the sides.
- Once your elbows are bent 90 degrees, raise the dumbbell back to the starting position.
- Repeat until you have completed the desired number of reps.
Here is a useful video demonstrating the exercise: