Lifespan Fitness has a refreshing quality line of treadmills. With 6 models to choose from currently, Lifespan offers some great features such as handle bar speed controls, decline as well as incline, advanced programming, step counting and more. The high end models have powerful yet quite motors allowing one to run without disturbing others. The treadmill line includes 4 folding models, the TR500, TR1000, TR2000 and the TR3000. Lifespan Fitness also makes 2 non-folding models, the PRO3 and the PRO5 (both of these are commercial grade machines).