We all have phobias, that is, fears. Someone is afraid of the dark, someone is afraid of confined spaces, he cannot even ride in an elevator, because thinks that the walls are under pressure on him. When we are afraid our heartbeat accelerates and muscles tighten, that we are even ready to fight. Many are afraid of dogs, even seeing them in the photo. But all these phobias are made up in our head, in fact they do not exist.