years 30 kick boxers have sustained serious injury in the ring including broken wrists and arms, broken shins, broken noses, dislodged shoulders, hip injuries and broken jaws. One Cambodian boxer died in the ring in Svay Rieng Province in 2001, but that death was the result of a heart attack, probably brought on by diet pills consumed to help the boxer reduce his weight before the bout. Most of the injuries suffered are curable and don't leave lasting problems. Most boxers are allowed to return to the ring after receiving treatment. Rules and match setup A match consists of five three-minute rounds and takes place in a 6.1 meter square boxing ring. A one-and-a-half or two-minute break occurs between each round. In olden times, ancient Khmer people would do praying rituals before going to the battlefield or war. At the beginning of each match the boxers practice the praying rituals known as the kun kru or thvayobangkoum krou. There are different variations of the thvayobangkoum krou ritual with different names such as "Hanuman ties the bridge to Sita". There are 17 different variations of the ritual. Most are based on the main characters of the Reamker story and believe to have occurred when Cambodia had a strong belief in Hinduism. The pre-competition teacher offering ritual also serves to warm the muscle and increase blood flow. The praying ritual at the preliminaries of the boxing match is considered a real dance. Traditional Cambodian music performed with the instruments of the sampho (a type of drum), the sralai klang khek (oboe) and the chhing is played during the match. The music of Khmer boxing is called vung phleng pradall or vung phleng klang khek. The music is made up of two sections. The first section is for the boxer's teachers while the second section is the fight music. The first part uses a spirit(teacher) to help the boxers concentrate their minds and have confidence. The first part of the music is played slowly in a rubato style. The melody is played by the sralai(oboe) and the sampho(drum) plays strokes at important points of the melody. The second part which is the fight music is played much faster and in meter. The music accelerates with the progression of the round. It stops at the end of the round or when someone is knocked out. When the fight is exciting, the audience claps in