Getting in shape doesn't have to be boring. With an MP3 music port and 4 walking workouts created by a real Certified Personal Trainer, you can listen to your own music through the built-in speakers and keep your workouts interesting. Perfect for walking or running, the AT 500 has a self-cooling motor that provides better operation and has a longer motor life. If you're worried about unnecessary joint wear, it also features ProSoft™ Cushioning that reduces joint impact by 15%. Don't forget, like all of our current ProForm® treadmills, it has SpaceSaver® design that allows you to fold the deck vertically for storage.