To get to my office on the top floor, I need to climb another six sets of stairs. That means, yep, you guessed it, I have to go up a total of 8 sets of stairs to get to my office every morning.

On the grand scale, 8 sets of stairs per day really isn't that much. But for some less mobile folks, it's nearly (or completely) impossible to negotiate. If you're not one of those people, go on... try a set. Go slow at first. Careful not to pull anything or go too fast. Get up and get climbing. You'll feel a whole lot better.
Lose the elevator... Lose the escalator... Bring a bottle of water and take an extra set every day. You'll be surprised how wonderful an exercise it really is.