As is common knowledge at this stage, when he's not standing around looking intimidating in Season 6 of Game of Thrones, Thor Björnsson (AKA The Mountain/Robert Strong) is in training to compete in various strongman competitions around the world.
With World's Strongest Man 2016 coming up, he's in overdrive and decided to share his diet and routine on social media. This one is not for the faint of heart.
So no live goats as this writer initially suspected, but still quite a substantial amount of eating. He even has to get up in the middle of the night to consume some protein powder or raw eggs. Now that takes commitment.
Via Time