John and Teyla Emmagan sparring in Atlantis' gym.
Sparring is a form of sport used to train people in fighting. Ronon Dex and Lt. Colonel John Sheppard often perform sparring sessions, as a form of leisure (at least for Ronon). (SGA: "Sunday", "Doppelganger")
Jaffa often spar with each other when training or practicing for combat. Usually, Jaffa warriors in training will use Bashaak staffs. Bra'tac notes that despite his age, he has never lost a sparring match to Teal'c. Teal'c claims that he let Bra'tac win. (SG1: "The Warrior", "Orpheus")