Exercise has a big impact on the health of our bones. Our bones are constantly being renewed. This process happens faster in some bones than others. For example, the bones in our spine regenerate quickly, while our thigh bone, the femur, takes more time. When bones break, they usually heal in a few weeks. Overall, it takes about three to six months for bone tissue to completely renew itself. As we get older, our bone mass decreases, and the...