STARTING POSITION:
Select the appropriate weight of the dumbbells. Lie on a fitball. Make sure you rest your upper back and your head on the fitball. Move your arms to hold the dumbbells just above you with your elbows slightly bent and the palms looking at each other. Contract your pelvic floor and core. Make sure your feet are flat on the floor.
MOVEMENT:
Start lowering your arms to the sides until they are paralell to the floor preventing the elbows from bending. Inhale during the descent. Return to the starting position in a strong movement while you exhale.
TIPS: While your are doing the exercise, move only the shoulder joint, make sure you don't move any other part of your body. During the descent, focus on slow and controlled movement.