Exercise is the most important factor for maintaining and developing new bone growth. Typical Weight bearing exercises include, brisk walking , jogging, weightlifting,and team sports.
Yoga is also a wonderful source for bone growth.
A study of elderly women living in a nursing home found that isometric exercises three to five times a week increased lumbar bone mass over 3 percent in 8 months. The increases were highest in those women who had been least active before the exercise program. To me this indicates that it is never too late to start improving on your health. Exercise is important for not only the bones, but the circulation of your entire body. By having proper circulation your body is able to utilize its nutrients more effeciently.