They want to seem tough so people would be scared, or they do it for fun or anger.
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I heard it can make your knuckles look really ugly. This is bad if you want to be a hand model.
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In fact, it does harm your knuckles. I'm the living proof. It doesn't hurt, but the joints I cracked are swollen. The XRay scans certainly didn't look pretty. Probably damaged ligaments said the doctor. In case you wonder: my general health is excellent, I have never broken a bone in my life and no one in my family has Arthritis, neither do I. So, speaking from experience, please be careful. It does not make your fingers less functional, but it does make them ugly. That is, 3 to 5 millimeters extra on every side of a cracked knuckle.
Another Persons view:
I crack my knuckles toes and just about everything else about twenty times a day and in my opinion it loosens up your body and makes it easier to move I'm a dancer and I can't dance with out having my back popped by someone who knows what their doing so I believe cracking you joints is good and cant "deform" you.
Don't do it. It's bad for your fingers.
Yes, It's bad to crack your fingers at a young age because it can cause arthiritis, a very painful medical condition which can only be treated by doctors' prescription.
when you crack your fingers, your fingers can't bend when you're older.
when you crack your fingers, your fingers can't bend when you're older.
No....
Now, if you are still young and growing, your fingers will stick grow even if you crack them.
you become a pineapple :D
Crack is bad because it can cause health problems, addition, and other problems.
No. Your knuckles crack because of gas bubbles formed in the joints under pressure.
It is bad because it can burn the skin cells in your fingers
No it is not because you could eventually break your fingers it does become a habit try to challenge yourself to not crack your fingers for a whole day if you do that congratulate yourself by dong something special.Recent research is showing that people who do crack their knuckles may be more prone to arthritis in the future. This is a good reason not to do this.
Yes, it is bad, and it ages you before your time.