Contrary to the name, heartburn is not acid burning the actual heart inside the body. In involves the esophagus, the stomach and the valve that was put there to keep stomach bile from coming up into the throat and mouth, in reverse of what it is supposed to do. People have had trouble waking in the middle of the night to a terrible burning sensation in their chest and the first thing that comes to mind is that it feels like the heart is burning up. They start looking for quick heartburn home remedies that they can use right away.