Does anyone else find that they start hyperventilating without realizing it? and by the time you do realize it your already going into an attack? I think this may be a cause for my lightheaded and "out of body" sensations I have prior to attack. Just wondering what everyone's thoughts is on this? Before I ever suffered chronic panic attacks I always thought hyperventilating looks like gasping for breath the way they show it on t.v. but it isn't.