Hi Gabe, Unless I missed it while reading these comments, I did not see asthma mentioned. There is such a thing as exercise induced asthma. I did not develop asthma until later in life and now it seems I can flare up at the drop of a hat with SOB and extreme fatigue. It worsened after Covid last year. I am presently getting over asthmatic bronchitis with pneumonia. I am on my second inhaler with next step being a nebulizer and visit to a pulmonologist. I have horrible allergies. I also have reflux and a hiatal hernia, but, Endoscopy showed everything looked well. I pray you get some relief from this. SOB is exhausting. Bless you.