end of run.

There’s something about running in the cemetery.  After 4, 5, 7 or 10 miles…finally bursting up the hillside, defiant of desolation, and drawing that final running breath so deeply that a bet could be your lungs will burst. Yes, that final breath that hurts so much.  And then you realize that the pain and the depth of that breath is what sets you startling apart from the stillness all around.

"Humans are awfully good at running, and they have exceptional endurance, " Bramble said, "and they are the only primates that engage in this kind of weird behavior -- which is why we asked ourselves how this could have happened."

  —Running 'key to human evolution'

  —picture of Homo erectus, from alien archive, 2 million y.a.