I barely slept at all last night due to a strange feverish feeling, so this morning I not only feel strange and feverish but am also three-quarters asleep. I keep deciding which room of my flat I want to go into, and then walking into a different one by mistake. I therefore decided going to work would be bound to do more harm than good, and hence didn't.
My current preference for passing a sick day would be to spend a fair amount of it playing NetHack. Today, even that is denied me, because my current NH saved game is looking really quite promising and I don't want to blow it by playing like a pudding while groggy. So I suppose it's the sofa for me. Oh well.