Fans of the hit HBO series Game of Thrones will no doubt be familiar with Hafþór Júlíus Björnsson, the 400-pound Icelandic actor and bodybuilder who plays Ser Gregor Clegane, A.K.A. “The Mountain.”
What those fans might not have known (though they might well have suspected) is that Björnsson also happens to be the World’s Strongest Man—a feat he has attained by sticking to a monstrous diet.
Björnsson, who stands at six-feet-nine, recently explained to Business Insider that he burns through six meals per day in order to sustain his bulk and exercise regimen—an immense amount of food that can add up to about 10,000 calories each day.
To give him those calories, he mainly eats lean proteins and simple carbohydrates, including steak, rice, carrots, peppers and sometimes chicken.
If you’re feeling jealous about being able to eat that much all the time, maybe don’t be.
“I think sometimes, ‘Is this worth it?’” he told Business Insider. “I’m always eating, and I’m never hungry. I’m always eating and working out.”