This one issue people don't think about, good deep breathing, and most just go thru life doing their shallow breathing. The lungs are a huge issue in this covid disaster and if only people worked on their own breathing, that could change things.

If one can, get outside and if one has Sun, get in the sun and do some good deep breathing and with NO MASK, which only constricts breathing.

Deep long breaths thru nose, and long deep breathing out thru mouth...Do these during the day and do them slowly. No hyperventilating.

I do the deep breathing work thru the day and was just reminded again by Dr. Victory during her weekly 1 hr program.

And of course she forever talks about Vit C, Vit D, Zinc, Quercetin and I take Grape Seed Ex for years, all for prophylactics.