Dunno what but I've been exhausted, had headaches, exhaustion, and malaise all week. Basically just worked, ate, and slept. Running was out of the question. Had bloodwork too but everything came back negative. In retrospect I've been dragging for the last week and a half. Everything was harder than it should have been, recovery was bad, and I skipped a workout. Blah, blah,blah. Perhaps viral? Who knows. Perhaps it was mono. Dunno. So long as it passes.