Growing up, most of our mothers warned us that cracking our knuckles will “cause arthritis.” Fortunately, those who still savor cracking their knuckles seem to be safe. There is no medical evidence that habitual knuckle-cracking leads to arthritis. (The sound of the crack is believed to be caused the joint rapidly separating and forming a gas bubble which quickly collapses.) However, repeatedly cracking your joints can possibly cause soreness as well as irritate your coworkers – so it’s best not to overindulge!