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SciShow: Season 2014

2014x97 Why Do Joints Pop And Crack?

  • 2014-06-24T04:00:00Z on YouTube
  • 10m
  • United States
  • Documentary, Special Interest
SciShow explains what really causes those popping sounds your joints make -- fluid dynamics, people! -- and what you should watch out for if you're a habitual knuckle-popper.
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