Brazilian Jiu-Jitsu is a martial art and combat sport that focuses on grappling and especially ground fighting. It is a derivative of early 20th century Kodokan Judo,which was itself then a recently-developed system (founded in 1882), based on multiple schools (or Ryu) of Japanese jujutsu.

Like judo, it promotes the principle that smaller, weaker person can successfully defend themselves against a bigger, stronger assailant using leverage and proper technique; applying joint-locks and chokeholds to defeat them. BJJ can be trained for self defense, sport grappling tournaments (gi and no-gi) and mixed martial arts (MMA) competition. Sparring (commonly referred to as 'rolling') and live drilling play a major role in training, and a premium is placed on performance, especially in competition.

Boxing is a combat sport and martial art in which two people fight using their fists. Boxing is typically supervised by a referee engaged in during a series of one- to three-minute intervals called rounds and the boxers generally of similar weight. There are three ways to win; if the opponent is knocked out and unable to get up before the referee counts to ten seconds (a Knockout, or KO) or if the opponent is deemed too injured to continue (a Technical Knockout, or TKO). If there is no stoppage of the fight before an agreed number of rounds, a winner is determined either by the referee's decision or by judges' scorecards.

Muay Thai is a form of hard martial art practiced in large parts of the world, including Thailand and other Southeast Asian countries. Muay Thai has a long history in Thailand and is the country's national sport.

Muay Thai is referred to as "The Science of Eight Limbs", as the hands, shins, elbows, and knees are all used extensively in this art. A practitioner of Muay Thai thus has the ability to execute strikes using eight "points of contact," as opposed to "two points" in Western boxing and "four points" used in the primarily sport-oriented forms of martial arts.

Colloquially referred to simply as Greco, this style of wrestling forbids attacks below the waist. As a result, throws are encouraged as the Greco-Roman wrestler cannot avoid being thrown by simply hooking or grabbing his opponent's leg. Otherwise, the sport is similar to freestyle.Arm drags, bearhugs, and headlocks found in freestyle have greater prominence in Greco-Roman. Throws especially known as a suplex are used, in which the offensive wrestler lifts his opponent in a high arch while falling backward on his own neck to a bridge in order to bring his opponent's shoulders down to the mat

Judo is a modern Japanese martial art and combat sport created in Japan in 1882 by Dr Kano Jigoro. Its most prominent feature is its competitive element, where the object is to either throw one's opponent to the ground, immobilize or otherwise subdue one's opponent with a grappling maneuver, or force an opponent to submit by joint locking or by executing a choke. Strikes and thrusts by hands and feet as well as weapons defences are a part of judo, but only in pre-arranged forms (kata) and are not allowed in judo competition or free practice (randori).

American Combat Jujitsu is a system of martial arts that was developed by Professor Tony Maynard.  This system is the culmination of over 40 years of his training in various martial art disciplines.  The system was derived and influenced by the many martial art styles the professor had studied.  These styles include:  Goshin and Kato Ryu Jujitsu, Small Circle
Jujitsu and Judo.  The professor also combined the striking and kicking aspects of Chito Ryu and Isshinryu Karate into  his own system.  Professor Maynard drew from all of these systems some ideas and techniques that helped the development of "Combat Jujitsu".