We all know actors regularly have to transform their bodies for roles, sometimes slimming down, sometimes bulking up, sometimes shaving all their hair off... whatever it takes, basically.
But while we'd normally associate such extreme transformations with the likes of Christian Bale or Matthew McConaughey, it seems actor Simon Pegg - who's known for comedy flicks like Shaun of the Dead, Hot Fuzz, Paul and Channel 4 sitcom Spaced - has joined the ranks, too.
His personal trainer, Nick Lower, shared an update of Pegg's six-month transition, explaining he had to get 'lean, VERY lean' for his new role in the brief for his role in indie thriller Inheritance.
"It required a specific body shape and look," Lower explained in a tweet.
He said Pegg's body weight went from 78kg down to 69kg, and his body fat from 12 per cent to eight per cent.
This was achieved through 'a mix of strength, circuits, core & 60km p/w trail runs!' and 'a sound nutrition plan that worked for him and his goals'.
"6 months of hard work has paid off and I tip my hat to you sir..." Lower said.
Pegg also shared the photo, joking the journey also included 'mild grumpiness'.
Also occasional mild grumpiness...:stuck_out_tongue_closed_eyes::muscle: https://t.co/d1V9OedEo6
- Pegg News (@simonpegg) March 1, 2019
According to the Hollywood Reporter, Inheritance follows the family of a wealthy patriarch after he suddenly passes away, as they discover a shocking secret inheritance that threatens to destroy life as they know it.
Pegg, who will star alongside Kate Mara, will reportedly be teaming up with British filmmaker Vaughn Stein once again for the film - following their recent work together on 2018 neo-noir thriller Terminal, which also featured Aussie actor Margot Robbie.
Pegg told SlashFilm that it was the dialogue in the script that tempted him to Terminal, telling SlashFilm: "It was nice to see some really, really chewy dialogue that was twisted, and a bit strange and felt like a little dinner theatre play that you might see somewhere, and that's what really drew me to it.
"Also, the fact that it was a group of young people making their first feature. They pulled themselves up by their boot straps, called themselves producers, and have their secret weapon in Margot as well which gave it some momentum. That really appealed to me."
For the dialogue-heavy film, Pegg and Robbie worked closely alongside Stein in the rehearsals for his directorial debut.
Pegg continued: "Margot and I just got in the room and started kicking around our own motivations with Vaughn, who's also the writer and the director. Which is great because we were able to say, 'Hang on, I think this might be a little too much at this point', or, 'Maybe Annie doesn't feel this way about him at this point'.
"Being able to get to set with all those problems solved was great, it meant that we could work faster. Which, on a 27-day shoot, whatever it was, you need to do."