Ground fighting (also called ground work or ground game) is hand-to-hand combat which takes place while the combatants are on the ground. The term is commonly used in mixed martial arts and other combat sports, as well as various forms of martial arts to designate the set of grappling techniques employed by a combatant that is on the ground. It is the main focus of Brazilian Jiu-Jitsu and is featured in varying amounts in Catch wrestling, Judo, Sambo, Shoot wrestling, Dishuquan Dog Kung Fu, some schools of Shuai Jiao and other styles of wrestling.