The adrenal system reacts to stress by releasing hormones that make us alert and reactive. The problem is, the adrenal system can't tell what's a regular case of nerves, and what's real impending disaster.
The body doesn't know the difference between nerves and excitement, panic and doubt, the beginning and the end. The body just tells you to get the hell out. Sometimes you ignore it… That's the reasonable thing to do. But sometimes you listen; you're supposed to trust your gut. Right? When the body says run… Run!