When seeing how fast Pacman is and how he is able to move his body it can hardly be argued that (in addition to be a hard worker) he has been blessed with a physique that is pretty perfect for a boxer. On the one hand he has relatively long arms and a thick neck for his size. But what I believe makes him able to move the way he does is his posture. Everyone has a slightly S-shaped spine, however with Pacquiao this seems less pronounced. It is like he has a rubber stick instead of a spine. Seeing him jumping in and out for attacks makes me think of a flummy-ball so the name "pacman" is really adequat.
