The recumbent frame design allows for a natural body position that's easy on your knees and ankles. Plus the ERGOfit™ base and seat back, provide lumbar support, so you can ride comfortably for miles.A pair of handle-mounted pulse grips, let you monitor your heart rate so you can exercise more effectively and efficiently. Also included are 8 built-in workout programs, including interval workouts, rolling hills, weight loss programs, tempo-based workouts and more.