Did you know that everyday activities like walking or lifting something heavy can cause tiny cracks "microfractures" in your bones? But don’t worry, your body has a built-in repair crew. Specialized cells quietly break down old or damaged bone and replace it with fresh, strong bone in a constant process called bone turnover. This helps keep your skeleton sturdy, heals micro-injuries, and makes sure your bones stay healthy and resilient over time. Sometimes these cells get out of whack though - where the ones that break down the bone outpace the ones that build it back up. You see this in things like osteoporosis and cancers that spread to the bones.