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The above photo illustrates a flexed arm with the chemical structure of protein on a bicep. Approximately 20 percent of U.S. Armed Forces active-duty personnel use protein supplements. (U.S. Air Force photo illustration/Senior Airman Katrina Heikkinen)


Protein supplements

The above photo illustrates a flexed arm with the chemical structure of protein on a bicep. Approximately 20 percent of U.S. Armed Forces active-duty personnel use protein supplements. (U.S. Air Force photo illustration/Senior Airman Katrina Heikkinen)

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