People crack knuckles because it makes a funny noise that makes people come back for more. When you crack your knuckles your hands get bigger as you grow up.

What make sound and Side Effects?

Your knuckles are covered by a small capsule. When you crack your knuckles gases are released that is why you hear that sound. Then the gas is formed back into a bubble. Also it takes a while to let you crack the same knuckle you just cracked.

Cracking Knuckles Lead to Arthritis

Well there is no proof of arthritis leading to cracking your knuckles. Studies say that cracking your knuckles doesn't lead to arthritis and hurt you.

Thanks to www.hopkins-arthritis.org also to learn more.

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