http://www.fluther.com/disc/849/is-cracking-my-knuckles-really-bad-for-me/
if you are too lazy to click the link, no
I hope not! I crack my knuckles all the time
same. when you crack your knuckles you’re poppingbuilt up bubbles of fluid in your joints. i dont know how that’s bad…it feels so damn good
Yup :P