There are several forms of gymnastics, including rhythmic gymnastics, artistic gymnastics, acrobatics, trampolining, and wheel gymnastics and no handed gymnastics. In "artistic gymnastics", gymnasts perform short routines using different pieces of equipment. "Acrobatics" involves showing balance and performing flips on the floor or in the air. In "trampolining", gymnasts do routines using only the trampoline. "Wheel gymnasts" exercise in a large wheel called a German wheel. 