Strengthen your heart and build more lean body mass targeting the large muscles in your legs, thighs and buttocks using the ProForm 310 CSX recumbent exercise bike. With a 5kg (11lbs) flywheel, it delivers a smooth action and to vary workout intensity, there are 16 levels of computer-controlled resistance. The bike is fitted with a clear, large LCD display to provide training data and a choice of 17 workouts to stay challenged. The 310 CSX puts less stress on your knees and hips thanks to a comfortable riding position and cushioned seat. Thanks to iFit functionality (30-day Free iFit membership included), the bike gives you access to an interactive workout library of thousands of riding videos and on-demand studio classes led by elite personal trainers.