Your mama was always worried that you'd go off and join the circus, but you went to college and made her proud instead. It's not too late for you, though, because the trapeze isn't just for super-athletic, death-defying circus performers anymore. In 2000, a group of people left the Imperial Flyers, a Denver-based amateur-flying-trapeze club, and decided to construct an indoor rig at the Bladium Sports Club so that they could practice in the winter. At the same time, they started Thin Air Trapeze, a nonprofit trapeze school. Beginning classes at Thin Air Trapeze teach you some basic trapeze moves with the added security of safety lines at your waist. Now people between the ages of 9 and 96 can learn how to climb and take off from the perch, how to swing, how to fly in the "knee hang," and the all-important lesson of how to fall to the net gracefully. Thin Air Trapeze also offers intermediate and advanced lessons for trapeze enthusiasts. If flying high above the ground at fast speeds is not for you, Thin Air Trapeze also teaches circus-arts classes closer the ground, such as juggling and trampoline tricks. You can learn to fly on the trapeze for $75 for four sessions, or stop by on a drop-in basis for $25; however, reservations are required. You also must sign a waiver to participate in the high-flying fun. Nervous yet? Visit them on the Web at www.thinairtrapeze.com.