Justin Bieber Shows Off His Muscles After a Workout!

Justin Bieber carries his sweatshirt in one hand and an iced beverage in the other while leaving the gym following a workout on Sunday (March 18) in West Hollywood, Calif.

The 24-year-old singer showed off his muscles in a tank top while leaving the gym, but he arrived in a sweatshirt. He was also wearing leggings from his own merchandise line!

PHOTOS: Check out the latest pics of Justin Bieber

The day before, Justin was seen playing a game of soccer with his buddies.

30+ pictures inside of Justin Bieber sweating it out…