If you've ever laced your fingers together, turned your palms away from you, bent your fingers back and heard a loud crack or pop, you know what knuckle-popping sounds like. So, what would happen if you popped your knuckles all the time?
Bones and muscles -- the musculoskeletal system -- are what make the body move. Learn how every movement of the body is the result of the coordination of bones, muscles, tendons, and ligaments.
More To Explore