A key feature of panic disorder is actually adjusting your behavior persistent fear of future panic attacks. We tend to get signals, like heart rate, blood pressure, sweatiness, nausea, shortness of breath, things tus. Then our brain is trying to interpret these signals and then there's a conclusion that i'm dying. Now what we're going to do is talk a little bit about the mechanisms panic to sort panic attacks. And this'll also set us up for what you can do about panic.