Justin Bieber Works Up A Sweat

The 20-year-old pop superstar hit the gym yesterday, and treated his fans to a collection of photos from his shirtless workout.

“Back in the gym #dontbescared #orangegymrats,” he captioned the five-photo collage, which he posted on his Instagram page on Thursday.

And what do you do after a hard workout? Hit the showers, of course!

Justin’s manager Scooter Braun posted a video of The Biebs, wrapped in a towel, as a fully-clothed Scooter jokingly enjoys the sauna.

“That steam was fantastic,” Scooter pans.

Following his day at the gym, Justin hit the town for a night out with friends, where he ran into Amber Rose and snapped a photo.

“Good night with friends,” he captioned the shot, which appears to have caught Justin staring at Amber’s chest – and Amber, in turn, posted her own photo of their encounter.

“The Biebs @justinbieber wanted a pic with Muva and I him. He’s a sweetie pie,” she wrote on her own Instagram page.