Taekwondo's popularity has resulted in the varied evolution of the martial art into several domains: as with many other arts, it combines combat techniques, self-defense, sport, exercise, meditation and philosophy.

There are two main systems of taekwondo as well as traditional tae-kwon-do, which is not competition oriented and focuses only on the self-defence and traditional value of the art. One comes from the Kukkiwon, the source of the sparring system "Shihap Kyorugi" which is an event at the summer Olympics and which is governed by the World Taekwondo Federation (WTF); the other comes from the International Taekwondo Federation (ITF), which was founded by General Choi Hong Hi, the father of taekwondo. Although there are doctrinal and technical differences among the two taekwondo styles and the various organizations, the art in general emphasizes kicks thrown from a mobile stance, employing the leg's greater reach and power (compared to the arm). Circular motions that generate power are of central importance. Also important to the generation of power is the movement of the hips while performing a punch or a block. Taekwondo training generally includes a system of blocks, punches, and open-handed strikes and may also include various take-downs or sweeps, throws, and joint locks.

Taekwondo is known for its emphasis on kicking techniques, which distinguishes it from martial arts such as karate or southern styles of kung fu. The rationale is that the leg is the longest and strongest weapon a martial artist has, and kicks thus have the greatest potential to execute powerful strikes without successful retaliation. One defining kick of taekwondo is the back kick.

Taekwondo as a sport and exercise is popular with people of both sexes and of many ages. Physically, taekwondo develops strength, speed, balance, flexibility, and stamina. An example of the union of mental and physical discipline is the breaking of boards, which requires both physical mastery of the technique and the concentration to focus one's strength.

A taekwondo student typically wears a uniform (dobok), often white but sometimes black or other colors, with a belt (tti) tied around the waist. The belt indicates the student's rank. The school or place where instruction is given is called the dojang.

Source: Wikipedia.org