TRUEFORM RUNNERTrueForm has the smoothest, quietest, and most subtle curve of all non motorized treadmills which allows users to feel safe and in control of their speed, whether walking, jogging, or running. The TrueForm is perfect for all skill levels from beginners to the most advanced and intense training regimens. Both The Runner and Trainer have a very smooth belt and the most shallow curves on the market, which is critical for promoting a balanced healthy