It is some kind of post-stress thing. This is the first time he has relaxed in a couple of weeks. Not once has he sat down in a bar with a beer, or put his feet up on a desk, or just collapsed like a decaying corpse in front of the television set. Now his body is telling him it’s payback time. He does not sleep; he does not feel drowsy at all. Actually, he’s been sleeping rather well. But his body refuses to move for an hour, and then most of another hour, and to the extent his brain is working at all it can only chase its tail.