If you've ever heard your knees pop when you stand up or noticed a cracking sound in your back as you stretch, you’re not alone. These sounds, medically known as crepitus, are common and usually ...

Q: My knee makes a popping sound sometimes — should I be concerned? A: Knee noises can be unsettling, but they're not always a cause for concern.

There are certain sounds you expect to hear during a workout: heavy breathing, weights clinking on the rack, and the catchy melodies of a pump-up playlist. One that may very understandably catch you ...