Some kind of viral infection is kicking my butt and it is stopping me from running. Hell I can't even walk without getting a sweat on. Really worrying me, i was just about to do week 5 run 2 but really don't know when i am gonna be well enough to do it. Will I have to go back over the first run? Or even back a week? Not run for a week now and concerned my stamina/fitness is going backwards.