FALSE! My French teacher asked her doctor about cracking her knuckles and if it was bad and he/she said no it does nothing to your hands. What you hear is the nitrogen and air being released from between your joints. It causes NOTHING to happen to you. Her doctor actually said to her "knock yourself out"! If you want to stop one way is if you crack all your knuckles one week don't crack your pinky knuckle(s) then the next your ring finger knuckle(s) an so on until you stop!