Have you ever tracked your unconscious body movements? You know, those little things your appendages do when they are left to their own devices, when your brain is busy focusing or thinking or has just checked out. I bite the scar on the inside of my lip when I'm thinking. I curl my toes when I'm really focused. I stretch out my fingers when I'm anticipating something. It's odd how your body acts seemingly of its own free will. Like small rebellions against order and control.