BEEFCAKE OR BULLSPLIT?

EVER wonder how buffed-up movie musclemen like Chris Hemsworth, Dwayne “The Rock” Johnson, Chris Pratt and Hugh Jackman suddenly got oodles of muscles for their roles as comic book heroes? Well, wonder no more.

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West Hollywood’s board-certified plastic surgeon to the stars Dr. Gary Motykie — a former bodybuilder — is in full flex revealing the bruisers he believes to be Grade A all-natural beefcake, who achieved physical perfection with diet and exercise … and the dudes he suspects had help from the wonders of modern chemistry, including legal anabolic prescription steroids such as testosterone, growth hormones and peptides.

DWAYNE “The Rock” JOHNSON

6-foot-5, 260 lbs.

The former college football player and pro wrestler, who starred in The Scorpion King and other adventure flicks, admits he took steroids as a teen and more recently used testosterone replacement. Says Dr. Motykie, “It is pretty obvious he is doing something — particularly at his age (51) to have that amount of muscle. He is probably on a mixture of testosterone replacement therapy rather than steroid supplementation.”

HENRY CAVILL

6-foot-1, 190 lbs.