Nicolle, I do this too though I just do it anywhere and just for the sake of it.
If someone mentions it I feel like I have to do it.
If I twist my upper body really quick then it cracks all the way down.
its disgusting when i do it because its so loud!
i worry that it will cause me back problemos but i dont really care at the end of the day coz i know im not gonna make it to old age anyway.
just thought id share that
chesca xox