J.K. Simmons’ body is giving us whiplash.
The 61-year-old actor has been pumping iron for his upcoming role in superhero movie “Justice League,” where he plays Commissioner Gordon, and now even his biceps have biceps.
Simmons’ secret to his ripped bod? Doing grueling workouts with former Marine turned fitness trainer Aaron Williamson, whose clients include Zac Efron, the Rock and Sylvester Stallone.
“Whenever we’d train together we started focusing on arms and to try and bring his shoulders out a little bit,” Williamson tells the Daily Beast. “It eventually became this goal where he could find a role where he could wear a tank top and give people a look at something they’d never seen before.”
Williamson has been posting his client’s progress on Instagram.
“Saturday morning, 61 years old and making the young generation jealous,” he writes in a caption. “This is what dedication looks like.”