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Fit Nation triathletes ready to race!

Six CNN viewers selected for the Fit Nation challenge have transformed their bodies and minds.

Mon Sep 08, 2014 @ 11:52:13 am ET via CNN Video
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About

I’m a father of three, a practicing neurosurgeon, and a globe-trotting journalist. Join me as I go beyond the headlines, and offer insight to stories that shape the quality of life for you and your family. FULL BIO

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