This month's fun fearless females: the reasons these Cosmo readers live up to the title.(Anja Wyttenbach, Cirque du Soleil's "O" and Crystal Endsley, Poet)(Brief Article)

Anja Wyttenbach, 30 Acrobat Las Vegas, Nevada

Fearless factor: I've been a main performer in Cirque du Soleil's "O" for six years, where I'm in 10 shows a week. Very few people in the world have done my act. I balance on my head on a trapeze that swings like a pendulum 25 feet above the stage. So far I've never fallen during a show.

Fun factor: I left school at 17 to join a circus. Since I've been challenging my body for so long, my favorite thing to do these days is exercise my mind. I recently earned a certificate in marketing. The class was exciting because the teacher was so unconventional. I can see myself going into that field one day.

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