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Its perfectly healthy. All medical advice shows that cracking nuckles, joints etc doenst cause any long term health effects...see disclaimer below
The old wives tale that you will get arthritis is just bullshit.
so crack away!
FROM WEB MD:
3: Cracking your knuckles will cause arthritis in later life.
ANSWER: False. Depending on your point of view, knuckle-popping sounds disgusting or cool. There is no evidence that cracking your knuckles inflames the joints and leads to arthritis. The cracking causes the bones to pull apart, forming a gas bubble and breaking the adhesive seal in the joint. Crack! About a quarter of the people in the U.S. crack their knuckles and might begin to lose their grip a little. Constant cracking can weaken the fingers.
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