There is a Chinese Special Forces exercise where soldiers have to act as a human bridge, using their bodies to bridge a narrow chasm so their buddies can crawl over them to the other side. Well, that totally illustrates the concept of Super Plank. You want to get to the point where your body is a finely honed tool. You can make it do what you want. It is there to safeguard the "you" the lives inside it and make sure that should you need to use it in an emergency it is fully capable of doing what it has to.