also fasting for long covid. although i only do shorter ones, mostly 48 now. i want to work up to a longer one though. currently caught a nasty stomach bug and my appetite is gone so I might shoot for 72. for me, i see a slight baseline shift after 2 days already. i used to flare up upon refeeding but that has passed i think. nowadays im struggling most with fatigue, PEM and constant leg/arm pain.
how are you feeling 15 days in?