If you have pneumonia, sleep on your stomach. This alone reduces mortality rates by 30-40% because in the prone position, lung compression is decreased, secretions drain better, and collapsed alveoli reopen.
Source:https://digitalcommons.ric.edu/cgi/view ... ontext=etd
I posted this back on March 27th. Another article below that confirms that Proning helps save lives:
As scientists search for a drug to treat coronavirus, ER doctors are employing a simple, low-risk technique they say is preventing prevent serious infection.