Man, I hear ya, LtS! Be nice to yourself for as much as you are able.

I managed 15 minutes of qi gong at an altitude of 9,980 feet above sea level. I had oxygen on and I was huffing until I actually started to do the movements. It was pretty neat to feel everything calm down, the breath flow, and the pulse oximeter was reading in the 90s which is GOOD! We were at a transmitter site which Rog had to go take care of ...an emergency trip. I am glad I was enough better that I could go with him.