Marcy Foldable Upright Exercise Bike with Adjustable Resistance for Cardio Worko... Featured! $130.08 Make sure this fits by entering your model number. EXCELLENT CARDIO WORKOUT – The fat-blasting cardio offered by this exercise device is significant, as each pedal targets the quads, hamstrings, and glutes. Not only does it burn fat, but it also strengthens the leg’s muscles, giving you well-toned legs ADJUSTABLE RESISTANCE – This bicycle has a manually adjustable resistance that offers various degrees of exercises. With eight preset levels of magnetic resistance control, you can set to simulate various types of workouts depending on the resistance.