HOW: Begin this exercise upright with the resistance band anchored at about elbow height. Hold the end of a band with the desired resistance then perform the movement. Keep the shoulder blade pulled back for the entirety of this exercise, move quickly back and forth with your shoulder for this exercise.
FEEL: You should feel the back of the shoulders working with this exercise
COMPENSATION: Avoid excessively bending or straightening the elbow as your go through this motion, the elbow should remain bent to about 90 degrees for the whole movement