I've heard riders say that your abs are important because they help hold you up in the road bike position. Now, is that really an accurate statement?? Correct me if I am wrong, but muscles cannot push; they can only pull. Seems to me, the muscles in the lower BACK contribute to holding you up. Just like the triceps PULL to straighten the arm (the biceps do not PUSH to straighten the arm). Are people confusing what they have heard/read?