In the recovery area for the Seattle Marathon I picked up a free pedometer from a local radio station. I recalled reading that a healthy adult should take at least 10000 steps a day (it was also discussed in the movie Super Size Me) and thought that I would easily do more than that on an average day.
Well after wearing the pedometer for a week, I've determined that software engineers really do have to work to do that many steps. I started counting from the moment I left the house until I got into bed. One day I looked at my pedometer at lunch time and was shocked to see only a measly 500 steps taken!
Fortunately I was able to take an extra stroll in the afternoon to boost my steps, but for the week my lowest number of steps was ~4500 and my best was just over 10000. This included trips to the gym, but didn't include any games of soccer.
If you haven't counted your steps, get a cheap (or free) pedometer and give it a try. You might be surprised. While wearing it I've taken a few extra walks around Microsoft campus and avoided skipping the gym on 'low-step' days, which has got to be good for me.