Just like anything else. If you’re afraid of something, once you are exposed to the pinnacle of whatever that thing is, you realize that you can survive, it is not the worst thing in the world, and you should stop being so terrified of it. Or at least that’s how its supposed to work. My biggest fear, caterpillars, if someone submerged me in a tank of them, I think I would stop breathing so. Maybe to each his own on this one.