Remove the two screws from beneath the left and right extension legs that support the motor on the frame to raise the treadmill uprights. When the treadmill is elevated for storage, the extension legs provide assistance on inclines. The ProForm Crosswalk Caliber Elite treadmill is an attempt by ProForm to distinguish its treadmills from those of other manufacturers. The $699 machine is billed as "more than just a treadmill," featuring upper-body handlebars and adjustable resistance for a whole lower and upper body exercise. Customers enjoy the upper body workout, which is regarded as the primary reason for purchasing this treadmill. The inaccuracy of the heart rate sensor and a very noisy fan are two common concerns (as loud or louder at high settings as the treadmill itself).