Day 3. Haven't excericed in over 4 month. last time I excercised I ran 3 miles. I used to be a marathon runner, before all these symptoms started. But now I've torn up my knee (or so the quaks say) and my pain level is at a 9 when I walk or run - so haven't been about to excercise in quite some time. I miss it terribly. I'm barely getting from my bed to the couch and can't even walk around a super market at this point.