View full lesson: http://ed.ted.com/lessons/why-do-your-knuckles-pop-eleanor-nelsen
Some people love the feeling of cracking their knuckles, while others cringe at the sound. But what causes that trademark pop? And is it dangerous? Eleanor Nelsen gives the facts behind joint popping.
Lesson by Eleanor Nelsen, animation by Steve Belfer Creative.
Tagged under: Eleanor Nelsen,Steve Belfer,TED,TED-Ed,TEDx,TED Education,Knuckle,Joint,Cracking knuckles,Popping knuckles,Ligaments,Bones,Synovial joints,Synovial fluid
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