There are many reasons people crack or pop their knuckles. Some do it as a nervous tic, others do it because of restlessness, still others do it to relieve pressure and stiffness and then some, ...

I don’t remember how old I was when I first heard someone say, “Don’t crack your knuckles! It’ll give you arthritis!” But I do know that ever since then, I’ve felt a weird pang of guilt any time I do ...

You’ve heard it before. You’re in a quiet room in among a gathering of people, and then—POP!—a little cracking noise rings out, followed by another, and another, and another. For some, cracking ...