Rob McElhenney is getting real about his body transformation.. The 41-year-old It's Always Sunny in Philadelphia star took to social media this week after the show's season 13 premiere to address ...

This Guy Shares the Realistic Plan He Used to Gain 30 Pounds of Muscle Naturally. ... "I'm currently sitting at 172 pounds, 10 percent body fat, 5'10, and a lean body mass of 155 pounds." ...

Rob McElhenney Mocks His "Super Realistic" Body Transformation See what the It's Always Sunny actor told his Instagram followers about his new muscular look. By Jess Cohen Sep 07, 2018 4:52 PM Tags.