HOW: Begin by holding a resistance band in both hands. Spread the band so that your hands are slightly wider than shoulder width. Rotate your arms all the way around - this mean elevate your arms overhead and then back so that the band touches your back side. Then bring your arms overhead and forward. Maintain stretch on the band throughout the entire motion.
FEEL: You will feel your shoulders stretching with this exercise. The more narrow your bring your hands, the greater the stretch. If you can't go all the way around, widen your hands - or use a lighter resistance band to allow your more width, this will allow your shoulders to go through the full range of motion.
COMPENSATION: Avoid bending the elbows as you go through this. Also avoid pushing one arm through at a time, both arms should be moving in sync.