Started running again in the last few years and enjoying. I have had fibromyalgia for almost 15 years and have tried everything over the years: diets, medications, vitamins, any natural remedies I could find to try to over come the pain, fatigue, and depression that came with this. I was told by a few different doctors that I wouldn't be able to run that it would to strenuous. However I was able to ease my way into running and am so glad that I have. I am feeling better now than I have in years and it is due to my regular exercise(Jogging/biking) and my diet. I believe you can start running at any age if your smart about it and don't over-do when you start.