Performing the: A Step-by-Step Tutorial Dumbbell Press on Exercise Ball
Carefully roll down onto the ball until your upper back and shoulders are comfortably resting on it, keeping your knees bent at a 90-degree angle and your body forming a straight line from your knees to your head.
Hold the dumbbells up above your chest with your arms fully extended, palms facing towards your feet.
Slowly lower the dumbbells down to the sides of your chest by bending your elbows, making sure to keep your wrists straight.
Push the dumbbells back up to the starting position by extending your arms, and repeat the movement for your desired number of repetitions.