Stamina ATS Air Resistance Exercise Bike: As professional trainers often attest, stationary cycling can improve your cardiovascular fitness and even increase your metabolism for more efficient calorie and fat burning. The Stamina ATS Air Resistance Exercise Bike adds to those proven benefits by letting you target your entire body. Pedaling with your feet strengthens your legs, thighs, hips, and calves, while the dual action handlebars work your arms, shoulders, and chest. By working both your upper and lower body simultaneously, the Stamina ATS Air Resistance Exercise Bike increases the intensity, burning additional calories and fat. The Air Transfer System (ATS) dynamically controls your resistance while you workout. The harder you pedal, the harder the resistance. When you need to slow down, the air resistance eases off. The Stamina ATS Air Resistance Exercise Bike changes with you, so you can keep your focus on workout out. The tension dial lets you take the starting resistance up or down easily from the riding position.