Battle arena

The battle arena was a large room aboard the USS Phoenix-X, a renovated Klingon Practice Room, where much of the crew practice and compete in physical combat. Those people who knew about the Phoenix-X were usually somehow privy to knowledge of this arena and its popularity. ("Ghost Face Killah", "Omega", "Avalon Battlefield, Part I", "Killing Spree", "The Cash Flow", "Civilization", "A Tholian Encounter", "Temporal Doom! Part I", "The 47's", "Forbidden Crossing, Part III")

The battle arena, foremost, served as an area for the Klingon-half of the crew to let their need for real combat go free and to mediate their frustrations with living aboard a Starfleet vessel. It secondly served as an interest for the rest of the crew to indulge in hand-to-hand combat. The martial-arts became an ongoing venture with most of the crew. In 2381, a fighting tournament was held between the crew within the Arena, seeing Lieutenant Elly as the winner. ("Phoenix Restoration", "King of the Iron Fist Tournament")

In times of great pressure, the Captain would more than often book time and use the arena to meditate. ("Jumpers, Parts I & II", "Destiny's Revenge, Part I", "The Shadow Maneuvers", "New Beginnings") Lieutenant Kayl has been known to go to the arena for meditation as well, due to her telepathic abilities. ("Destiny's Revenge, Parts II & III")

Viewing holographic matches was also a past-time for some of the crew. In 2380, RaeLuna and Trunks had an appointment at the arena to watch a holo-match. ("The Timeship")