You don’t have to be in a scary situation to have a panic attack. You could be on a hike, at a restaurant, or asleep in bed. All of a sudden you get a strong surge of fear. This triggers physical symptoms like a pounding heart, sweating, shortness of breath, nausea, chest pain, or trembling. It can last 5 to 20 minutes. Once you learn to recognize when attacks are coming on, you can find ways to stop them.