I recently pulled an all-nighter, partly to see if I still could.

It was surprisingly OK. I did have a short nap in the small hours, and another the following afternoon, but I was mostly functional. Sure, I wouldn’t have driven a car, and in conversation I was pretty random, but the stuff I was working on turns out to be pretty good. So how was the recovery?

I slept for eleven hours straight, then the following afternoon for another three.

Drat. Not as young as I used to be.