Sit in a Pec Deck machine facing its back support with your arms stretched out grasping the handles.
1. Inhale and force your elbows to the rear. Your arms will be about 180 degrees apart or a little more when stretched completely out.
2. Exhale while you complete the movement. Return to starting position and perform the next repetition.
Notes: This exercise works all the deltoids, particularly the posterior delts, the infraspinatus, trapezius, rhomboids, and Teres Minor.