Think exercising gives you stronger bones? Contrary to popular belief, exercising doesn't significantly improve bone density. The amount of increased bone density that exercising gives you is very, very miniscule, according to a report by the New York Times.
People know that bedridden people lose bone mass when confined to the bed. So they've also assumed that those who are more physically active have stronger bones. That isn't the case, says the study. Studying bones by using DEXA machines, which "measure bone density by hitting bones with X-rays," scientists found out that people who exercise only really gain about one percent extra bone density or less.
"There was no evidence that bone was gained when people walked or ran," they said.
Yet the report is quick to state that those who are more physically active are still less prone to bone injuries. Why? Because exercise strengthens muscles. That extra muscle mass provides extra protection to the bone. Stronger muscles also make it less likely for you to fall or twist your leg in an awkward manner that would otherwise result in an injury.