Human after all

Well, I solved the mystery of yesterday's crummy run. I'll spare you the list of symptoms, but it appears I've come down with a mild bug of some sort. I run a low-grade fever at the drop of a hat -- I guess that's a convenient signal to slow down -- and I know from experience that I can either heal from whatever ails me or exercise, but not both at the same time. So I skipped the treadmill altogether today and will see how I feel tomorrow. With luck, I won't be sidelined for too long and will at least be able to get back to some easy run/walk intervals soon!