Got on a bike for the first time in many years yesterday. I just turned 50 and finally realized that I have abused my body for too long. I gave up my smokes 3 weeks ago and feel very good about that decision. I am not obese, but I could stand to lose a few pounds. I have a minor foot problem that keeps me from long walks, so I decided to dust of the old Schwinn and cruise around. God, do I feel it today!!!!