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o chicken, no eggs, no fish, no dairy. All plants, all whole foods, all the time. It's what I live on. It's what I train on. It's what I compete on. It's what I thrive on."

This is how ultradistance triathlete Rich Roll describes his PlantPower Diet and its effects in his book "Finding Ultra: Rejecting Middle Age, Becoming One of the World's Fittest Men, and Discovering Myself." Roll's book is a literary mashup, part memoir and part diet manifesto. Its ...

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