What’s your body trying to tell you?

Photo by: Jen Corace
Cracking Joints-
Most Likely Causes:
The fluid around a joint contains a variety of gases, such as oxygen and nitrogen. When you crack a joint, you cause the joint to stretch, ... more 
Photo by: Jen Corace
Cracking Joints-
Most Likely Causes:
The fluid around a joint contains a variety of gases, such as oxygen and nitrogen. When you crack a joint, you cause the joint to stretch, which rapidly releases gas bubbles that snap, crack, or pop. The cracking sound could also be due to a tendon rubbing across bone.

Related: 6 Ways to Avoid Bad Posture

Less Likely Cause:
If you feel pain each time a joint cracks, it may be a sign of a cartilage or joint problem, such as arthritis.

What to do:

-If the cracking doesn't hurt, don't sweat it.
-If you have pain or swelling, or the joint is red or warm or has limited motion, see a doctor to find out what's going on.
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Tue, Nov 8, 2011 6:07 PM EST
By Stacey ColinoEvery pop, ping, ache, and pain has a meaning. Here's when to take action.