chris230
chris230 chris230
  • 15-11-2016
  • Health
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Why do knuckles crack

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codyscherer123 codyscherer123
  • 15-11-2016
the pop your hear is air pockets poping

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julia60
julia60 julia60
  • 15-11-2016
Because all the movement and nonmovents your hands go through it builds up air and that air can be released by simply moving your hands or pushing down on them. Which "pops" them and makes the noise.
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