SACRAMENTO, Calif. — Snap, crackle, pop. If you're a knuckle cracker, that familiar sound when you consciously pop your joints is like comfort food. You know it might not be so healthy for your hands ...

Some people habitually crack their joints, others can’t, and many are irritated by those who do. So what’s going on? Why do people do it, is it harmful, what makes the noises, and what would happen if ...

How often have we been told not to crack our knuckles? The belief that cracking knuckles leads to arthritis is deeply embedded in popular culture. This notion has been perpetuated through generations, ...