The Geek-a-Cycle is a computer desk exerciser. Bolt a recumbent bicycle to a desk and throw in a computer and monitor and you’ve got the idea. $349.95 excluding the computer (padded seat $15.95 extra). I’m getting panic chills just thinking about this thing, gimme a GameBike any day.
While you work, you pedal. Set the drag on the magnetic resistance to light. As you think, pedal. When you type, stop pedaling. Over the course of the day you will find you pedal miles without even thinking about it. At the end of the day you have completed your work and you have completed your exercise.