I believe so , that crunch graphics throw me off Roc-it basically aims to incorporate some of your own bodyweight , so you feel ur ass lift as you perform the movement
What is the purpose of "rocking" while you perform the movement? Does this aid in muscle gain or prevent injury? I have seen these machines more and more in gyms.
It aids in subliminally communicating to others in the gym that you are a homosexual. Does this guy in the video look like it benefits him at all ?