Charlie Hunnam Kicks Off His Day at the Gym in Hollywood!

Charlie Hunnam chugs a bottle of water as he leaves the gym with a friend on Saturday morning (March 3) in Hollywood.

The 37-year-old former Sons of Anarchy star kept things cool in an olive colored beanie, gray hoodie, and navy shorts over gray running leggings as he started off his day with a workout.

PHOTOS: Check out the latest pics of Charlie Hunnam

Charlie is currently in the midst of filming the upcoming movie A Million Little Pieces.

The movie is based on the book of the same name and is about “a mysterious tough guy who became the guardian angel at a rehab facility for the protagonist, who tried to end his addiction problems before they killed him,” Deadline reports.

Aaron Taylor-Johnson also stars in the movie with his wife Sam Taylor-Johnson directing.

25+ pictures inside of Charlie Hunnam leaving the gym…