What are the benefits?
Reduced risk of Injury. Since the hooks move along with the Bar, the "lift off", and "racking" of the bar are always done at your natural position. You do not need to reach behind your head for pressing exercises, putting your shoulders into an injury prone position. You do not need to lean forward for squats. You can always begin and end your exercises in the most natural, reduced-risk position!
The greatest strength gains result from pushing to full muscle fatigue. Since the hooks move along with the Bar, and are spaced at 4-1/2" intervals, you can push to to muscle fatigue and rack the bar at the level where you get stuck by simply rotating your wrists. No need to rely on the safety spotters when pushing to the limits. (Please always DO set the Safety Spotters at appropriate height to avoid serious injury.)
Setting up for the next exercise has never been easier! Simply raise or lower the bar to the desired starting position, add the desired weight, set safety spotters, and lift!
Can it be used as a Smith Machine?
Yes. Simply engage the spring pins to lock the horizontal movement into place for traditional "Smith" exercises!