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RHYTMISCHE SPORTGYMNASTIK: OLYMPISCHE SPIELE SYDNEY 2000

SYDNEY, AUSTRALIA - SEPTEMBER 29: OLYMPISCHE SPIELE SYDNEY 2000, Sydney; MEHRKAMPF/FRAUEN; SPEZIAL (Photo by Gunnar Berning/Bongarts/Getty Images)

Headless Rhythmic Gymnasts

Rhythmic gymnastics can bend and contort with the best of Cirque du Soleil performers.  Warning: This gallery will make your neck hurt. -By Andrew Dubbins, Yahoo! Sports