Here is an exercise bike compact enough to fit on your desk to let you work and exercise at the same time. It features magnetic resistance and adjustable seat. it has max capacity of 220lbs. You get 8 resistance levels to push your body as hard as you like.
This under desk bike has a built-in LCD to show time, speed, distance, and calories. It has 4 swivel wheels that let you move the bike around easily. When done, you can fold the pedals and base out of the way for easy storage.