Participants are over 18 years old and high school students. One round is 3 minutes, and junior high school students are 2 minutes per round. Competitions in Japan are usually three rounds, but international competitions also shorten one round to two minutes and last four rounds.(引文)
Western boxing and archery are ancient survival skills used by primitive people to strengthen their bodies and survive in harsh environments. Before bows and arrows were invented, humans had to defend themselves with fists. This is the earliest prototype. It was first seen in historical records in Egypt in the 4th century BC. Boxing was practiced in ancient Greece and Rome. After the collapse of the Roman Empire, boxing disappeared.(引文)