Because I use wearables to capture as much information about myself as possible, I can go back and see how my illness affected my activity.

Between returning home from vacation in August, and getting sick in late September, I averaged between 6 and 8 miles a day, mostly walking the dog. (Separately I got in a run each week, pushing that day’s mileage up over 10.) In October (as you can see above) my distance fell to between 3 and 4 miles each day until just about the middle of the month, then gradually started increasing. I exceeded 6 miles on October 15th. I didn’t reach 8 miles until October 30th.
Now I’m right back to 6 to 8 miles a day, same as before I was sick. And today I went for my first run since September 26th. It was a pretty crappy run, but better than not running.