question: My daughter is a very fit college athlete. During workouts her heart rate goes up to 190-195 and has to keep stopping due to shortness of breath and feels like her throat is closing up. Had a stress test, ultrasound, sleep study, and they dont think asthma. I am stumped and dont know what to do. The cardiologist didnt even seem to take her seriously because of her age and wanted to chalk it up to anxiety. Help!!