Hey guys, I have always wondered about this but just now asking.....when I work Bi's out, I work them to failure, however, I dont see or feel the "pump' that I can see with Tri's or Fore's......they hurt like hell and when I get done with each set, I coouldnt do another rep, but no pump or engouging like the other parts.....Form I think is good, slow and easy, with a squeeze at the end...but no bi pump