Almost every form of traditional martial arts uses a system of belts that students progress through up to Black Belt. And this whole time almost nobody has understood or taught the anatomical reason for these belts. If you look at the design of the belt it is thick and strong in most arts, and though this has been handed down for generations it’s purpose has not. If you postulate a physical reason for the belt the only other sport that wear’s belts is in weightlifting. In weightlifting the belt gives your lower back support, but it is much wider than a martial arts belt. The size of a martial arts belt is to small to provide decent back support. If you look at the placement of the belt on the body and compare it with the human anatomical structure the secret taught by only a few masters in the world presents itself. The belts, when worn properly(up high by the belly button) go right over the area of the kidneys. And on the kidneys are the adrenal glands. This region is where all the chemicals your body releases to give you the fight or flight response, creating an advanced state of strength, speed, and mental acuity. When used properly the belt is tightened to put pressure on your kidney and adrenal glands to help your body squeeze more of these chemicals out into your bloodstream. This in turn makes you stronger and faster, having more energy and endurance. The action of the belt is like squeezing a teabag to get all the tea out that is still in the bag. Or it is just like increasing pressure to turn coffee into espresso. So if you are in a situation where you need more endurance or are going to be in a fight you can tighten your belt to give yourself the edge.