Jūdō is a Japanese martial art founded in 1882 by martial arts master and professor of physical science Kano Jigoro (1860-1938) on the basis of the traditional Japanese martial art Jūjitsu. Jū means skillful, flexible, and dō is the religion with the purpose of “taking on the need to win over”. Jūjitsu is a martial art that fights such moves as cracking arms, cracking necks, … that can easily hurt a martial artist, so Kano has removed those elements of violence and made Judo more athletic. . The Jūdō does not use weapons, but the main attacks are knocking, crushing, strangling and locking arms and legs. Hand and foot slashes and stabs as well as defensive weapons are part of judo, but only in pre-arranged forms (kata, 形) and are not allowed in judo competitions or practice ( randori, 乱 取 り). A judo practitioner is called a judoka.