Nice comment in the showers at work (sorry for putting that image into your heads) - colleague in his 40's, after we'd had a bit of a chat about our cycle in and compared notes on bikes (God we're dull aren't we?!), he said: "I only wish I'd started biking to work years ago". I assumed he was talking about physique. "You mean - in terms of fitness?" I asked. "No", he said, "so I wouldn't have had so many miserable years on the tube".
Sort of know what he means. Once you're out there above ground it seems inconceivable to be forced to go under there every day.
And it made me think - it's never too late to start. Then I had my shower. The shower room was so hot, by the way, that I think (again, forgive the unpleasant image) I was more sweaty after it than before.