Please know that Covid does strange things to our bodies, and doctors are struggling as we are to figure out what to do about it. I have also found docs outside the Mayo Covid Clinic don't appreciate this and try to "fix" or aggressively treat the symptom -- making them worse. Our central nervous system is fighting a phantom disease for some reason. We need to retrain it out of flight-flight. The pain and exhaustion come from that. Although I have been frustrated at times as how long this misery has gone on -- more than 15 months for me -- I now appreciate the Mayo recommendation of a very slow and steady building up of muscle, activity, and strength again -- basically retraining body and brain with much positive self-talk that I can do things again without my central nervous system freaking out (and seemingly sending me back to square one). I have found the book "Cured: Strengthen Your Immune System and Heal Your Life" by Jeffrey Redinger a god-send and continuing source of hope. I have it filled with post-its and am on my 3rd (albeit slow) rereading. We can heal ourselves! It takes patience, nutrient-dense foods, stress management, and movement. If I only had strngth for one arm lift, it was one today, and hopefully two tomorrow. Please believe, and go slow. You will regain strength. You already knew how before Covid to do that. You need to find the post-Covid past to the same end. God bless.