What is Karate? Karate is one of the most widely practiced martial art forms in the world. Martial arts rely on acute physical coordination and mental focus. They were developed in Asia (primarily India, China and Japan) over the course of several thousands of years. In all this time, there have been countless martial arts variations, and there are hundreds of disciplines practiced today. Modern karate developed out of martial arts forms practiced in Okinawa, an island that is now part of Japan. For hundreds of years, Okinawan martial arts experts honed a variety of combat styles, in part due to the political situation in the area. From time to time, the ruling authorities would ban peasants from possessing any weapons, leaving them with only their own bodies and household items to protect themselves. A man named Funakoshi Gichin is credited with carrying the karate form beyond its geographical roots. In the early 20th century, he brought together elements from many Okinawan fighting styles and introduced the combat technique to mainland Japan and, eventually, the rest of the world. Karatekas generally credit the creation of modern karate to Funakoshi Gichin's son, Funakoshi Yoshitaka. While his father practiced full contact karate, where fighters delivered unchecked blows, Yoshitaka believed in a more peaceful application of the fighting principles. In this form, properly called karate-do, or "karate way," karate is seen as an all encompassing approach to life, rather than only a system for combat. Karatekas curb their punches, concentrating mainly on physical, spiritual and mental development rather than competition. The word karate is Japanese for "open hand" (kara means open and te means hand). Te signifies that your main weapon is your body. Instead of an arsenal of swords or guns, the karateka cultivates a personal arsenal of punches, kicks and deflection techniques. Kara relates to the psychology of karate. Karatekas are open to the world around them, making them better equipped to handle any attack. Displaying Skill Karate developed out of martial arts styles designed to aid in combat. For the most part, these fighting styles were intended only for self-defense, but they did include a means of maiming or even killing a person. One element of this is close attention to human anatomy. By applying forceful blows to the most vulnerable parts of the body -- the face, the solar plexus, the groin -- a karateka can bring down an opponent in short order. These days, karate is taught primarily as sport, not as a means of combat. Karatekas have several ways of demonstrating their skill without actually hurting another person. To demonstrate mastery of punches, kicks and blocks, karatekas will work various combat simulations. In one exercise, called kata, karatekas carry out a pre-determined sequence of movements against an imaginary group of attackers. Kata is extremely important to beginning karate students, as it helps them perfect their technique. More advanced karatekas may engage in kumite, a sort of freestyle sparring. In this activity, you fight with another karateka, but curb your punches. Typically, especially in the lower levels, karatekas will stop a few inches short of actually touching their opponent with a blow. Karatekas may also put on protective pads. Certain areas (below the belt, for example) are off limits. A karateka channels his or her own energy in order to maximize the force of attack. But in karate, it's just as important to channel your opponent's energy. Karatekas do this with intelligent blocking maneuvers. Like any moving object, a punch or kick has its own momentum, the product of its mass and velocity. Velocity (and by extension, momentum) is not only a measurement of speed, but also of direction. To put it another way, two objects with equal mass and speed have a different momentum if they're going in different directions. The force of impact between two objects is largely determined by the objects' momentum. To see how this works, imagine a car speeding toward a wall. If the car crashes into the wall head-on, the direction of momentum is directly perpendicular to the wall. The front of the car and the area of wall it crashes into experiences the maximum force of impact, and both suffer maximum damage. But if the car collides with the wall from the side (as you might hit protective walls flanking a highway), the direction of momentum is at an angle to the wall. The momentum keeps the car moving forward, so the wall only feels a small fraction of the total force. In this second scenario, the force of impact changes the car's momentum slightly. The wall pushes the car sideways, so the direction of the car's momentum carries it away from the wall (in other words, the car bounces off). The Physics When the ancient martial arts masters were developing their sophisticated fighting techniques, they experimented with fundamental principles of physics. In any fight between two people, both fighters bring a certain amount of energy to the situation. The total amount of potential energy depends on the fighters' size, muscle strength and physical health. The object of karate is to use your body to channel this energy. First of all, you concentrate all of your strength into a relatively small area. If you open your hands wide and shove somebody, the force of your attack spreads out across your palm and fingers. This dissipates the force of your attack over a fairly wide area; your opponent feels a relatively blunt force. But if you hold all of your fingers tightly together and hit the person with only the side of your hand, or with only your fingertips, that same amount of force is applied to a much smaller area. In that area, the impact is much more intense. If you try this on yourself (gently, please), you can appreciate the difference. The concentrated attack is a lot more painful. In karate, there are a number of punching and kicking stances, but most of them rely on this same basic idea. The point of impact is reduced to some small, usually bony area of your hand or foot, and the force of your attack is focused on this point. Karatekas strengthen their hands and feet so they can throw these punches and kicks without seriously hurting themselves. It is crucial to practice excellent technique; if a karateka continually punches incorrectly, he or she may eventually develop severe arthritis. Karatekas maximize the force of the impact by putting their whole body into the punch or kick. If you watch karatekas fight, you'll see that they often pivot their torso and shift their weight from one leg to the other when they throw a punch. In this way, the energy of their moving body goes into each hit along with the energy of the arm muscles. Karatekas also practice hitting with great speed, as this increases the force of each blow. One of the most important elements in karate is following through on punches and kicks. When you hit something, say a piece of board, your natural instinct is to slow down your swing just before impact; you hesitate because you don't want to hurt your hand. Karatekas deprogram this hesitation instinct; they visualize pushing their fist to some point past their target (the other side of the board, for example). To maximize the force of each movement, it's essential that the karateka follows through. Before each attack, karatekas take a deep breath. As they release the punch or kick, they let this breath out. This helps them focus on each movement.