Is Cracking Your Knuckles Bad?

man's fistApparently there are both mental and physical reasons behind why people have the urge to crack their knuckles. The real question though is, is it healthy? According to Michael Suk, M.D., chairman of the department of orthopedic surgery at Geisinger Health System,  “From a mental standpoint, it’s almost a nervous habit for some people, much like drumming their fingers or biting their nails. There’s a feeling associated with doing it as a mental stress reliever. From a physical standpoint, I think what this study shows is as you create space in the knuckle, you’re decompressing the joint, so your finger feels less constrained.”