It probably isn’t bad for the health of your knuckles, but it’s seriously bad for the mental health of everyone within ear shot. If you’re a knuckle cracker, please consider putting both of your hands firmly inside the nearest wood chipper and turning it on. You have NO IDEA how annoying this is to people/octopuses like me who suffer from misophonia. Misophonia is a little understood disorder in which certain noises make you go completely nuts, such as a person chewing nuts, slurping soup, tapping their pen, or cracking their knuckles. If you’d like to support research into why people like me are driven totally insane by certain annoying noises, please consider donating to the Misophonia Institute.