“The Rock” Shows Off His “21 (inch) Gun” Bicep Curl Workout
Want to know how ‘The Rock’ keeps his 21 inch guns so swole? He shared a portion of his workout on his Instagram page. View this post on Instagram A…

LOS ANGELES, CA – JULY 17: Actor Dwayne Johnson speaks onstage during Nickelodeon Kids’ Choice Sports Awards 2014 at UCLA’s Pauley Pavilion on July 17, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
(Photo by Kevin Winter/Getty Images)Want to know how 'The Rock' keeps his 21 inch guns so swole? He shared a portion of his workout on his Instagram page.