AceShowbiz - Outlander star Sam Heughan is working on pumping up his muscles so he won't be shown up by action man Vin Diesel when they begin filming Bloodshot.
The Scottish actor recently joined the cast of the Valiant comics adaptation, in which Vin will play the titular character, also known as Ray Garrison, who is brought back from the dead and turned into a super human with the help of nanotechnology.
Sam reveals he's been asked to bulk up for the forthcoming movie, so he's been working hard at the gym to fill out his figure a little more.
"I'm trying to out-Vin Vin, if you know what I mean!" he laughed on morning show Live with Kelly and Ryan. "They (filmmakers) asked me to put on some muscle and I've been training so I'm a little bit sore today."
Luckily, the 38-year-old was already in good shape - something Mila Kunis and her husband Ashton Kutcher became extremely jealous of while Sam and the actress filmed new comedy The Spy Who Dumped Me in Hungary.
"There's been plenty of times where Ash and I were driving through Budapest and Sam is just shirtless on a bridge jogging along," she recently told Entertainment Tonight. "Ash and I were both like, 'Godd**n, that a**hole, just jogging along with his little six-pack."
Sam will soon be able to take a mini break from his hardcore Bloodshot preparations as he enjoys a trip back to the U.K., but that doesn't mean he won't be staying active.
"I love to go outdoors, I love to go hiking," he smiled. "I'm actually going back to Scotland for a week next week, so I'm looking forward to going home. It's such a beautiful country, I'm very lucky."
Production on Bloodshot is set to begin in August, ahead of a 2020 release.