I have that. Keep doing the breathing exercises.
A couple of people have PM'd me to ask what the problem is.
I appreciate your concern, and best the wishes.
It is nothing to be worried about: I have Bronchiectasis, a chronic condition that has been slowly developing. It is now under control but I'm left somewhat less able to work at the level I used to do.
I had to chose between working 3 days a week and a good salary or retiring and continuing to help manage MSCC.