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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IMAGE IS PUBLIC DOMAIN
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This photograph is considered public domain and has been cleared for release.
If you would like to republish please give the photographer appropriate credit.
Further, any commercial or non-commercial use of this photograph or any other
DoD image must be made in compliance with guidance found at
https://www.dimoc.mil/resources/limitations,
which pertains to intellectual property restrictions (e.g., copyright and
trademark, including the use of official emblems, insignia, names and slogans), warnings
regarding use of images of identifiable personnel, appearance of endorsement, and related matters.