I started at 2 months shy of 66 and I wish I started much sooner. I was just looking for something to do. Anyway I'm almost 68 now and try to ride my Specialized Roubaix every day now. My first year I got 3340 miles in. I should be a little over 4000 this year. My blood pressure is 107 over 68 and my resting heart rate is in the mid 50s. I know it's working and I hope I can do it until I die.