Is it bad to crack your knuckles?

If you “crack” the joints of your hand regularly, you may wonder if it’s doing any damage. Some would have it that “you’ll get arthritis” in the long-term, but is there any truth to this?

To find out, Greg Foot and the BritLab team investigated the science.

In the video above, discover why it happens, what exactly is making the noise, and why you can’t crack your knuckles twice. And as a bonus, learn what happened to the dedicated scientist who cracked the knuckles of only one of his hands once a day for more than 60 years to see if it would be harmful.