When movie star Ewan McGregor flashes his biceps in the upcoming movie Son of a Gun, admirers can thank Bicton personal trainer Brett Smith.
Mr Smith, owner of Mind, Body & Soul fitness studio, worked with McGregor twice a week for five weeks to help maintain and develop his bad-guy physique for the movie, which has been mostly filmed in WA.
Mr Smith, who describes McGregor as "really normal", said his star client was a disciplined fitness fanatic. "He had three months of training in LA before coming to me, so he had good core strength," Mr Smith said.
"Certainly for his role playing a criminal he wanted the guns - the big arms - so he had to put on a bit of muscle and strength."
Mr Smith said McGregor's personal assistant came into the studio weeks before he arrived to ask questions on his behalf.
He believes his proximity to the star's temporary home in East Fremantle, and the fact his studio is a personal training centre and not a public gym, added to his appeal.
The personal trainer also revealed he managed to turn the Scottish star into a Dockers fan during his stay, taking the actor to Patersons Stadium for the round one derby win against West Coast.