The ultimate fat burner, the Lifespan Fitness EXER-90H exercise bike is a high intensity workout that is guaranteed to make you sweat. The enormous 25 inch diameter steel fan is the focus of this dynamic workout. Responsive tension means that the harder you push; the more resistance you’ll be met with. The EXER90-H gives you unlimited resistance, guaranteed! Our exponential air resistance system lets you find the perfect challenge for your ability level.