When you crack your knuckles what cracks?!

Question: When you crack your knuckles what cracks.?

or when you crack your fingers, knees, shoulders, back. what cracks when you do that.? it can't be bone otherwise i mean i'd have broken bones... so what is it.?Health Question & Answer

Answers:

its air in the joints that make a popping noise.Health Question & Answer

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When you crack your knuckles what cracks?!

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