Nutrition in a 6 oz. Sirloin
A 6-ounce portion of sirloin steak is twice as big as a usual 3-ounce portion -- which is about the size of a deck of cards or the palm of your hand, according to MedlinePlus. Eating a 6-ounce, protein-rich sirloin will help you achieve -- or exceed -- your daily protein needs.
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