I suggest that people park as far away from the office/school/store door to add steps to your day. I plan 4 "get up and get away for the desk" walks. I walk with purpose to specific destinations on campus. I offer to collect and drop off mail at the mail center. When I have complex info to relay or request, I go to the person's office for a face to face. The walk and the change of scenery is revigorating. If there are people on campus looking for a building, I don't just give directions- I walk them there. It gives me extra fresh air, and keeps the friendly campus image we are famous for.
Of course I use the stairs even though the elevator is across the hall from my office. I have a 5 lb kettle bell at my desk. Each time I finish lecture prep or grading, I do a set on each side.