I spent the duration of my illness doing the breathing exercises that were shown on here. I also moved the bed in the room I was isolating in so that my face was in line with the window. Wrapped myself in the duvet with hot water bottle, led on my front with my face towards the window which was fully opened. Everytime I got a cool blast of air it seemed to open my airways even if for only a second. It seriously helped me through the nights.We already suspect that Covid 19 is cumulative
I take from this article other than buying an oximetry is that getting plenty of fresh air and deep breathing excercises are worth doing regularly. Plenty of info on deep breathing excercises.