Muay Thai literally Thai Boxing and also known as The Art of the Eight Limbs is the Thai name for a form of hard martial art practiced in several Southeast Asian countries including Thailand.

Various forms of kickboxing have long been practiced throughout Southeast Asia. Muay Thai's origin in Thailand can be traced back to its ancestor Muay Boran ("ancient boxing"). This was the form of unarmed combat used by Siamese soldiers in conjunction with Krabi Krabong, the weapon-based style [1]. The precedence Muay Thai and Muay Boran give to the kicks is only indigenous to Thailand and the surrounding area, since Indian boxing as well as most southern Chinese styles use only low kicks sparingly. Another influence from Thailand's weapon style can be seen in the pre-fight Wai Kru ritual which is based on the sabre dance of Krabi Krabong. Neighbouring countries such as Cambodia or Myanmar also show signs of influence one way or the other. Eventually Muay Boran was divided to:

• Muay Korat (Northeast) emphasized strength. A technique like "Throwing Buffalo Punch" was used. It could supposedly defeat a buffalo in one blow.

• Muay Lopburi (Center region) emphasized movements. Its strong points were straight and counter punches.

• Muay Chaiya (South) emphasized posture and defense, as well as elbows and knees.

• Muay Pra Nakorn (North) emphasized speed, particularly in kicking. Because of its faster speed, it was called as well "Ling Lom" (windy monkey or Loris).

There is a phrase about Muay Boran that states, "Punch Korat, Wit Lopburi, Posture Chaiya, Faster Thasao.

The practice of Muay Thai was later kept up largely by Buddhist monks who were the keepers and teachers of all arts both practical and spiritual. As every Thai man is compelled to live as a monk at least once in his life the art grew in popularity among common people, so much so that it was said that any man worth his salt would practice it. As well as continuing to function as a practical fighting technique for use in actual warfare, Muay Thai became a sport in which the opponents fought in front of spectators who went to watch for entertainment. This kind of muay contests gradually became an integral part of local festivals and celebrations, especially those held at temples. It was even used as entertainment to kings.

Eventually, the previously bare-fisted fighters started wearing lengths of rope wrapped around their hands and forearms. This type of match was called muay kaad chuek.

Like most competitive full contact fighting sports, Muay Thai has a heavy focus on body conditioning. Muay Thai is specifically designed to promote the level of fitness and toughness required for ring competition. Training regimens include many staples of combat sport conditioning such as running, shadowboxing, rope jumping, body weight resistance exercises, medicine ball exercises, abdominal exercises, and in some cases weight training.

Training that is specific to a Muay Thai fighter includes training with coaches on Thai pads, focus mitts, heavy bag, and sparring. The daily training includes many rounds (3-5 minute periods broken up by a short rest, often 1-2 minutes) of these various methods of practice. Thai pad training is a cornerstone of Muay Thai conditioning which involves practicing punches, kicks, knees, and elbow strikes with a trainer wearing thick pads which cover the forearms and hands. These special pads are used to absorb the impact of the fighter's strikes and allow the fighter to react to the attacks of the pad holder. The trainer will often also wear a belly pad around the abdominal area so that the fighter can attack with straight kicks to the body at anytime during the round.

Focus mitts are specific to training a fighter's hand speed, punch combinations, timing, punching power, defense, and counter-punching are also used to practice elbow strikes. Heavy bag training is a conditioning and power exercise that reinforces the techniques practiced on the pads. Sparring is a means to test technique, skills, range, strategy, and timing against a partner. Sparring is often a light to medium contact exercise because competitive fighters on a full schedule are not advised to risk injury by sparring hard. Specific tactics and strategies can be trained with sparring including in close fighting, clinching and kneeing only, cutting off the ring, or using reach and distance to keep an aggressive fighter away.

Due to the rigorous fighting and training regimen (some Thai boxers fight almost every other week) professional Muay Thai fighters have relatively short careers in the ring. Many retire from competition to begin instructing the next generation of Thai fighters. Most professional Thai boxers come from the lower economic backgrounds and the fight money (after the other parties get their cut) is sought as means of support for the fighters and their families. Very few higher economic strata Thais join the professional Muay Thai ranks; they usually practise the sport as amateur Muay Thai boxers.