In a recent video interview with Men's Health, the Terminator star shows the content of his fridge - which is heavily stocked with plant-based foods such as fruit, vegetables, non-dairy milk, and vegan beef from Beyond Meat.
'I feel much better'
"You just want to see the food? Or do you want to bust me because I'm not 100 percent vegan?" Schwarzenegger asks.
"I eat more oatmeal, greens, vegetables, and healthy foods. [I] Stay away more from the meats and more animal products, and animal protein because there was this misconception that's the only way you get big and strong.
"So now I backed off that and I feel much better after eating more greens ."
Schwarzenegger, who terminates myths about protein in the upcoming vegan documentary The Game Changers, says he still has 'cheat days' - and regularly puts eggs in his protein shakes.
The Game Changers, directed by Oscar-winner Louie Psihoyos and executive produced by Oscar-winner James Cameron, 'documents the explosive rise of plant-based eating in professional sports, mixing real-time, groundbreaking science with cinematic stories of struggle and triumph'.
"The film features some of the strongest, fastest and toughest athletes on the planet - and it's backed by them too - with additional EPs including Formula One champion Lewis Hamilton, top-ranked tennis player Novak Djokovic, and nine-time NBA All-Star Chris Paul," says the film's description.
The Game Changers will be available in theatres across the world from September 16.
You can find and buy tickets here