They say cracking your knuckles causes arthritis. I'm not sure if I believe that, but, I do have a lot of problems with my finger joints & beginning to in my toes. So~ I have decided to try to stop cracking my knuckles to see if it helps. Right now, it's hell & it's worse since I stopped, but I only stopped 2 days ago. I end up having to crack them when they get stuck, but I am doing good. I've been trying to exercise them a bit to keep from getting stiff & rubbing arnica gel on them to help with the pain.