STARTING POSITION:
Stand straight with your feet shoulder width apart. Depress your right shoulder. Place your right thumb on the beginning of your second finger.
MOVEMENT:
At the same time, bend your wrist, move your fingers away from you and do an internal rotation of your shoulder. Return to the starting position in a smooth movement. Repeat the movement for the specified amount of repetitions and then repeat with the other arm.
TIPS: Make sure your forearm is at the same distance of your body at all times.