He was trying to do the Frazier thing, or the Tyson thing, but there aren't many fighters around nowadays that can keep it up through out whole fights. In fact there are none. In order for Peter to keep moving and weaving his way through punches like he did for two and a half minutes there he'd have to be a much more diligent pupil at the gym. I'm not saying he wasn't fit - he was in good shape in fact - but definitaly not the roadwork beast like a Tyson or Frazier of the past.