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Gregg Valentino is credited as having the world's largest biceps. He started bodybuilding at the age of 13 and his body responded extremely rapidly. By the time he was in his late teens he had already developed an outstanding physique at only 160lbs with 18 inch arms. Gregg claims after 23 years of training naturally he decided to experiment with steroids. During this time his arms grew from an impressive a natural 21" to an enhanced 28".

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14y ago

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