A Powerful Motivator
It has been said that fear is a powerful motivator. Certainly, when it comes to feats of superhuman strength and acts of bravery, the adrenaline and endorphins pumping through our system are most readily driven by fear. In a normal situation, I probably wouldn’t say anything at all to a wild-eyed guy with a knife, but if he puts that knife to my throat or to the throat of someone I love, I’ll be compelled to say something and/or to do something to eliminate that threat.