Technique
How to perform it
- Sit on an exercise ball with your feet flat on the ground and your knees bent at a 90-degree angle.
- Hold a dumbbell with one hand and extend your arm straight up above your chest.
- Slowly lower the dumbbell behind your head while keeping your arm straight.
- Pause for a moment, then raise the dumbbell back to the starting position.
- Repeat for the desired number of repetitions, then switch arms.
