it is bad for the people around you that have to hear it. cracking your knuckles has not been well-studied as a cause of arthritis in the hands so i think the jury is out as to any harm it may cause. you can post again in about 20 years and let everyone know how your hands are doing or you can just curtail this unnecessary habit.
is cracking your knuckles bad for you? . i crack my knuckles constantly and have heard you can develop arthritis over time. is this true? what else could happen if i continue to crack my knuckles?