No run today. Last night's run exhausted me (I went to bed at 8:30), and I am still feeling it. I am starting to suspect I might have something worse than just a cold/sinus infection. I feel like I did when I had mono in college- I feel ok for a day or two, but then go for a run and it totally wipes me out for a few days. If I don't feel much, much better by this weekend, I may go get a blood test. Something is definitely not right and I don't like it.