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Amazon.com: GU Energy Original Sports Nutrition Energy Gels, 24-Count, Assorted Caffeine-Free Flavors Variety Pack : Health & Household
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Rafaholics™ on Twitter: "Rafael #Nadal eating his energy gel. #halle2012 http://t.co/dY7i1LzM" / Twitter
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Spain's Rafael Nadal eats an energy gel as he plays against Russia's... Foto di attualità - Getty Images
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