I was fortunate enough to visit National Jewish Health in August 2025 for one week of exams and education. The respiratory therapist introduced me to the manometer and explained that I should only blow out so that the gauge registers in the green zone only. I should not blow any harder than that. I was amazed at how hard I had been blowing on this thing before and how damaging it could be to the structures in my throat. I previously had been placed mistakenly on oxygen by local pulmonologist due to sob. However, I was diagnosed with vocal cord dysfunction & was removed from oxygen therapy and have had to learn diaphragmatic breathing with rescue techniques. I am much improved my energy & exercise tolerance. I have also learned there is no need to strain myself to clear my lungs - using aerobika with manometer correctly manages my lung clearance nicely.