HOW: Stand facing a wall with your hands straight out from your shoulders, palms on the wall with a band looped around your wrist. Squeeze your shoulder blades and create some tension in the band by moving your wrist out. From here, keep one hand on the wall as the other moves against the resistance of the band in different directions like clock numbers. Return to the starting position after each direction.
FEEL: You should feel your shoulder muscles working.
COMPENSATION: Keep your trap muscles relaxed. Keep your elbows straight.