I ran the dog down the street yesterday. We were going to run around the block, but something happened. In a sudden moment I was gasping for air. This wasn’t your usual “I am out of shape” shortness of breath. My airway felt tight and I felt as if I was going to die. I stopped, tried to relax and turned back towards the busy street. If I were to pass out, I’d be seen. I feared that it meant that something horrible was happening back at home. But when I was back home, my breathing was normal again and everything was as I had left it.