Dwayne ‘The Rock’ Johnson reveals the reason behind his recent slim-down on the press tour for ‘The Smashing Machine’ hitting theaters on Oct. 3. The actor and his co-star, Emily Blunt, sit down with ET’s Kevin Frazier to discuss the Oscar-buzzworthy movie, which received a 15-minute standing ovation at the Venice Film Festival. Johnson plays real-life MMA and UFC champion Mark Ker in the biopic.
