Although riding a bike has plenty of health benefits, research shows that it’s not very good for creating strong bones — in fact, it can harm them.When riding a bike, you are sitting down, and it’s not a physical activity that has any weight-bearing. Even though it feels like you are using your legs heavily, the force you put on the pedals is not done in a way that affects your bones, such as your spine. Also, if you have been cycling for years, you are more prone to fractures.