When someone stretches or bends their knuckle to crack it, they increase the space between the bones, which creates a drop in ...

Ultrasound study shows that gas bubbles forming in joints create the distinctive sound of knuckle cracking UC Davis Health System research presented Tuesday at the annual meeting of the Radiological ...

Knuckle cracking is very common. Many people do it everyday instinctively, but never figure out why or what causes the popping sound. There have been debates about what the sound of knuckle cracking ...

Rachael has a degree in Zoology from the University of Southampton, and specializes in animal behavior, evolution, palaeontology, and the environment.View full profile Rachael has a degree in Zoology ...

The 40 participants included 30 with a history of habitual knuckle cracking and 10 without. Some said they had never intentionally cracked their knuckles; others were habitual, cracking them up to 20 ...

I’ve got my fair share of unconscious habits: running my hands through my hair, tapping my feet, pursing my lips when I’m concentrating—and, of course, cracking my knuckles. That last one is perhaps ...

There are many reasons people crack or pop their knuckles. Some do it as a nervous tic, others do it because of restlessness, still others do it to relieve pressure and stiffness and then some, ...