Knuckle-cracking can feel soothing for some people, which is why it's often called a "nervous habit." It can also be a self-stimulatory behavior, which is common among neurodivergent individuals.

Cracking the knuckles is a common habit. Does it cause arthritis or harm the joints? Rheumatologist Dr. Natalie Azar discusses the risks and benefits of knuckle-cracking.

While cracking your knuckles is usually harmless, you should stop if you experience any new pain, stiffness or swelling. Certain joints are riskier to crack than those on the fingers.