Yeah, fight/flight is BS. I should read it; the oversimplification of biology on the issue of adrenaline was always annoying to me. From experience to a lesser degree, there is a very complicated mess that adrenaline can cause to your whole thinking processes; biologically your reasoning systems are PRIMARILY fed through your amydala. The reasoning systems _can_ backinfluence the amygdala but at a much slower rate; the reasoning –> emotion link is thin and weak, but the emotion –> reasoning is fat, fast and strong.
Managing it properly is not easy; it’s a lifetime endeavor.