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Ironman

Video: The Energy Lab

Where does the Energy Lab get its name and why do so many athletes dread that segment of the marathon?

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The Energy Lab is one of the most famous stretches of the Ironman World Championship course, but where does it get its name and why do so many athletes dread that segment of the marathon? Find out in this video, which was shot before the 2011 Ironman World Championship.

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PHOTOS: Scenes From The Energy Lab