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Overlooking his fiftieth floor worksite, ironworker Jeff Devine perches on the roof of a high-rise with his typical day's worth of food in Chicago.  (From the book What I Eat: Around the World in 80 Diets.) The caloric value of his typical day's worth of food on a day in the month of September was 6,600 kcals. He is 39 years of age; 6 feet, 1 inch tall; and 235 pounds. He carries a cooler of ready-to-eat food from home rather than eat at fastfood restaurants and vending trucks. MODEL RELEASED.