an elderly grandmother automatically reaches for salt before even tasting her scrambled eggs. She sprinkles salt generously over her entire plate out of pure habit. Her concerned grandson gently tries to stop her hand, reminding her about her doctor's orders to reduce sodium. The grandmother pauses but then continues salting anyway, as if her hand moves on its own. Other family members at the breakfast table shake their heads knowingly, having witnessed this same routine countless times before. a behavior that exists as a natural part of someone and is deeply rooted and difficult to change