Wii Fit has a free run mode that takes players on a thirty-minute run. This method is meant to simulate a portion of the exercise that the user receives on a typical outdoor run.
Though the intent is to simulate the effects of working out, Wii Fit has shown to perform relatively poorly in providing a decent exercise. Researchers from the University of Wisconsin La Crosse performed a study that shows that any activity featured in Wii Fit burns significantly less calories than its real life equivalent. It is generally considered to be a good alternative when there is an inability to perform a real workout, but not much beyond that.