Here's what happens to your knuckles when you crack themby Vox 4 years ago
One man cracked his knuckles in one hand for 60 years and not the other. Watch the video to see what he found out.
Subscribe to our channel! http://goo.gl/0bsAjO
Vox.com is news website that helps you cut through the noise and understand what's really driving the events in the headlines. Check out http://www.vox.com to get up to speed on everything from Kurdistan to the Kim Kardashian app.
Check out our full video catalog: http://goo.gl/IZONyE
Follow Vox on Twitter: http://goo.gl/XFrZ5H
Or on Facebook: http://goo.gl/U2g06o