The shoulders pecdeck reverse fly is an exercise targeting the deltoids, particularly the posterior deltoid. It is performed by sitting on a pecdeck machine and grasping the handles with your palms facing each other. You then extend your arms behind you and slowly lower them until they are parallel to the floor, keeping your elbows slightly bent. You then return to the starting position and repeat. This exercise can be performed for moderate to high reps, such as 8-12 reps or more, as part of the upperbody or shoulderfocused portion of a workout.