Why is cracking knuckles SO LOUD?

Are you a knuckle popper? Me... not so much. 

But have you ever wondered how it gets so loud?  It's just tiny air bubbles right?


Well, someone spent a lots of time (years) and lots of money ($$$) to find out... 


***CLICK HERE*** ***CLICK HERE*** ***CLICK HERE***


knuckles Getty RF
Jana

Jana

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