He's been logging in the hours at the gym to transform his naturally scrawny frame into a specimen of muscular strength.
And on Sunday Justin Bieber was clearly proud of all his hard work as he posted a self-congratulatory snap to Instagram of one of his workouts at a fitness centre.
The 20-year-old performs a leg lift while positioned on a dip bar with the caption: '#ogr what a solid core . Lol #stayfit #dontbescared @thepatricknilsson'.
The tag was for his personal trainer Patrick Nilsson, who has helped turn the popstrel's puny body into an impressive physique.
In the picture, the Boyfriend signer wears neon green high top trainers, a baggy pair of shorts, and a tight-fitting tank top.
Grimacing slightly, Bieber wears a flat billed cap as he flexes his muscles during the taxing endeavour.
Meanwhile, his trainer recently opened up about the star's transformation.
‘I can’t keep him out of the gym,’ Patrick told In Touch of Bieber, who used to never lift weights and wasn’t ‘really eating much’.
Now, Patrick says, ‘There are periods where he wants to work out seven days a week.’
Patrick is currently on tour with Justin, whose body he transformed over the course of a year.
‘I’d been training with him for a while, but it wasn’t until last November that he was really pushing to get bigger and got motivated to work out harder.’
He added: ‘He said to me one day, “Man, I never want to be skinny again.”’
Source
