Some of you have some pretty elaborate routines. That's not for me. I do a set, go back to my desk or to my laptop on the couch, and 10 or 15 minutes later I go and do another. Did I mention that this is in the evening, when other people aren't around? I tend to work in my office 3 evenings a week - that's the life of a professor for you.

Also, some of you seem to think that the total number that I do is impressive. Thanks. I would have been impressed by the numbers when I first started out, but over about 5 months it's been really easy to build up by adding a couple to each rep when I feel I can. Maybe the pushups are easier for me because I'm pretty skinny these days (thanks to cycling). They would be harder if I had more upper body weight.