Instructions:

1. Sit on an exercise ball with your feet flat on the ground and your back straight.
2. Hold a dumbbell in each hand with your palms facing inwards and your arms bent at a 90-degree angle.
3. Extend your arms straight back, squeezing your triceps at the top of the movement.
4. Pause for a moment, then slowly lower the dumbbells back to the starting position.
5. Repeat for the desired number of repetitions.