I already take some of my work to the gym to do for several reasons. No one interrupts, the exercise focuses my mind, and I'm not giving up home time for a task I can rarely fit into work. I have preformed the particular task on both the treadmill and the seated bike, the only advantage to the treadmill is the easy reach to the support for notes. The task is one that does not immediately involve a computer however. I would not want to type while on a treadmill, but I could see trying it while using a seated bike. I think that this would work for a limited number of jobs and that it would have to be right for the person to be worth the investment.