Thus, presses, curls and other pushing and pulling exercises are easily achievable, unlike the treadmills of the prior art, and even the treadmill disclosed in the aforementioned U.S. Pat. No. 5,110,117 (Fisher et al.) In fact, the treadmill of the present invention also affords the user the ability to perform squats while standing on the motionless treadmill belt 22, and shoulder presses and benc