Muscles are flexing on social media thanks, in part, to Tim McGraw.
The country star nominated NFL great Brett Favre to show off his guns with the USO’s #Flex4Forces campaign.
Related: Tim McGraw Reveals the Secret to His Success
Brett followed through and then nominated Garth Brooks and Ashton Kutcher to flex their muscles for the cause.
Related: Garth Brooks Gives Five Millionth Fans New Cars
The #Flex4Forces campaign by the USO is meant to show support for the men and women of the United States Armed Forces.
To send a message and "Be the Force Behind the Forces," click here.