User blog comment:Ethan McCune/What is fear?/@comment-27007772-20140122185740

Fear is in human instinct. It is the reason we survived to evolve, as did every other animal. When in danger, or the brain thinks we are in a life-threatening situation, it causes fear. The point of fear is to release adrenaline so we have the extra burst of energy needed to escape a predator or another harmful activity.