55 here. I've been flirting with cycling for the last 3 years or so, after riding here and there all my life. My son works in a bicycle shop and is a Serotta fitter, so I have a very positive influence in my life (of course, he was destined to be so as his dad brought in a baby bike to the hospital the day he was born). I ride 3-4 days/week and in the past months or two or three have just really been pushing it. I used to stop and relax but now I have no need; I just want to keep riding. I'm in better shape than I was when I was younger although I'm heavier (sigh). I love to use my age as an excuse when I need to, but I just keep on doing my own thing by myself and loving it.