This isn't an easy idea to put into words, but what I meant was that, okay, sure, a person can realize that their adrenaline is pumping, but they're not going to think to themselves: "Adrenaline surging." It's just an unnatural, comic-book sounding line. It's like, Angsty Super-Hero Monologuing 101. Frank Miller did it better a quarter century ago.Would you have preferred "adrenaline rush" or "adrenaline kick"? I know I have those (and think about the fact that I'm on one when I do).