It's cold, your breath is chasing, your whole body is tense, trembling. But you can't move, stiffly in place. Your heart is beating very hard, feels like it will jump out of your chest, and the hair on your neck stands.
Whether it's a ghost from a horror movie or a disgusting cockroach, we all fear something.
The question is, why is this fear? Which part of the brain is responsible for fear that we experience? Also, what happens in our body before we really scream and run away in fear?