9 years ago
Canadian team cracks secret to knuckle-popping sound
If you're somebody who likes to crack your knuckles before tackling a tough task, listen up. A study led by researchers at the University of Alberta has cracked the secret behind the popping sound knuckles make when they're cracked. The secret to the sound is a momentary, vacuum-like gap formed in the lubricating synovial fluid between the finger and knuckle bones. When the joints are pulled apart too far, a momentary gas-filled gap forms in between, triggering the sound.
Continue Reading
http://www.ctvnews.ca
Join the Discussion