Tom allowed me to comment on his contributions to the 'interwebs' on the condition that it be anything but 'fawning;' more of a lessons learned. Sorry this is long, but some (interpreted) history is warranted.
Benjamin Franklin nailed it when he said, "Fatigue is the best pillow." True story, Benny. There's nothing like pushing your body so far past exhaustion that you'd willingly, even longingly, take a nap on a concrete slab.