Yesterday was weird. I had a headache in the morning, was listless all day, and had a weird pounding pulse at night (but no fever or anything).

Today I got up and got myself to work. I didn’t feel ill at all, but I can’t remember being so lacking in energy in my entire life. At one point I caught myself deciding not to write an email because doing so would require me to lift my arms. That’s when I got a little concerned.

But there was a lot to do, so I figured I could sit there and do it. And I did. And all of a sudden, just before the end of the day, I realized that I felt fine. I was working through all sorts of projects that would have been unthinkable just hours before. And now, as long as I don’t do something crazy like walk up a flight of stairs, it’s as if nothing had happened. What a relief!

[update: well… until later. Now I’m back to being utterly limp.]