Jump City's story starts with its two co-owners, both of whom competed as gymnasts in the 1984 Los Angeles games. Using this experience to back up their instruction, the Olympians personally coach children's gymnastics classes, in addition to overseeing CPR/AED/First Aid-certified staffers who supervise the trampolining areas. The 27,000 square-foot facilities also include two dodgeball arenas and a slam-dunk court, as well as an arcade and private party rooms. There's plenty for adults to do here too, as they can take yoga classes or surf WiFi in the cafe while their kids play.