Eleanor Nelsen: Why do your knuckles pop (2015)

17/10/2016

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.

ed.ted.com

This entry was posted on 17/10/2016 at 09:24 and is filed under Presentation.

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