This is a great exercise to engage all of the shoulder muscles. It works your Deltoid as well as your Pectoralis Minor. You definitely feel this burn if you do 3 sets of 24-30 reps (12-15 each arm).
*Don’t lower your arm lower than 90 degrees to your body when holding – keep feeling that burn and work that shoulder!!!
*Extend your arm up straight by your head
*Hold arms and weight steady as you hold and extend
*Palms should face your head the entire time
*Keep wrists firm, no bending in/out