Sure. The other thing I've noticed is that I tend to be more aggressive during strenuous runs. For instance, if a car doesn't yield to me at a crosswalk I'll pr

Sure. The other thing I've noticed is that I tend to be more aggressive during strenuous runs. For instance, if a car doesn't yield to me at a crosswalk I'll probably yell out something, whereas I normally would ignore it. Might be due to both the mental anguish and the "heightened acuity in preparation for the kill" you mentioned :)