64 here . . . got into bicycling about 13 or so years ago when I couldn't walk very well because of a bad hip. Cycling was the only exercise I could do without much pain. My hip replacement in 2001 fixed me up, and I'm riding more than ever. I try to ride at least a couple of week-long tours every year, plus numerous one-day supported rides in the area, and I LOVE to spin.