HOW: Standing with your elbows bent and arms by your sides, rotate your forearms and palms fully in and fully out to perform full pronation and supination AROM. You should be changing between your palms facing up and your palms facing down
FEEL: You may feel a stretch in your forearms and wrist with your forearms doing most of the work.
COMPENSATION: Make sure you're rotating your forearms and wrists, not getting motion from moving your arms. Keep your arms by your sides