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 ...

Your joints actually crack as a result of gas. A gas-filled cavity - known as tribonucleation - forms in the synovial fluid ...

If you’ve ever popped or cracked your joints — by accident or on purpose — you’re not alone. There’s even a medical name for that crackling, clicking or popping sound your bones make: crepitus.

Cracking your knuckles can trigger a variety of reactions—from the cringe-inducing to a deep sense of satisfaction. For many, the sound of their joints popping is a regular habit, yet it’s often ...