Dwayne Johnson gains 13.61kg for 'The Smashing Machine'

Entertainment Oct 01, 2025

Dwayne Johnson is going all in for his next role—he gained 13.61kg to play wrestler Mark Kerr in The Smashing Machine, hitting theaters October 3, 2025.
On The Tonight Show with Jimmy Fallon, he shared how he trained hard to build the quick, explosive muscles needed for Kerr's intense athletic style.

Johnson's prep included intense workouts

Johnson's prep included intense workouts and wearing 22 custom prosthetics by Kazu Hiro to nail Kerr's signature broad shoulders and neck—all under director Benny Safdie's watch.
Emily Blunt joins him as Dawn Staples, Kerr's ex-wife.
The film tells the real-life story of Kerr, a wrestler who later became an MMA fighter.