Fortified by the Fracture

In 1892, German anatomist Julius Wolff documented something remarkable about human bone: it doesn't just endure stress — it grows stronger because of it. When you run, lift, or carry weight, microscopic fractures form throughout your bones. Rather than weakening them, these tiny breaks trigger a repair process in which specialized cells called osteoblasts rush to the site and rebuild the bone denser and more resilient than before.…