Hi Gabe, thanks for sharing your story. I have been experiencing periodic shortness of breath for the past 2 years - sometimes more, sometimes less. I notice that I breathe through my mouth a lot - I never seem to get enough air when breathing through my nose (at least, that is how I experience it). I have had a lung x-ray done which showed nothing out of the ordinary. A little less than a year ago I did a spirometry test which showed >100% of predicted values. I also went to an ENT specialist who said I have irritated sinuses, which she says causes post nasal drip. I do have a lot of nose congestion, which likely explains my mouth breathing. She also said my throat has more mucus than usual, but she could not pinpoint where it comes from. I have also been to the doctor multiple times who eventually referred me to a psychologist. While it was nice to talk to someone about how I felt, it didn't really do much for my shortness of breath. I do accept that I spend way too much time thinking about and obsessing over my breathing. I think fear may exacerbate the feeling of shortness of breath, but I am still not convinced that it actually causes my shortness of breath. Just thought I'd share my story. Thanks again for sharing yours