Hafthór Björnsson has once again proven that his real-life physicality is even more impressive than the fearsome warrior he plays on HBO's "Game of Thrones."

The 26-year-old Icelander won the annual World's Strongest Viking contest last weekend, stunning his competition by carrying a 30-foot, 1,433-pound log for five steps. The feat was good enough to beat the previous mark, which was rooted in myth and reportedly set by the legendary Orm Storulfsson (which, by the way, is a great name to say aloud at the top of your lungs). 

“The legend of the Icelander Orm Storulfsson says that he walked three steps with this MONSTER WOODEN LOG which weighs over 600kg’s/1320lbs!," Björnsson proclaimed on Instagram. "It took 50 mere mortals to help him placing it on his back! After he took his third step his back broke under the enormous pressure and he was never the same after that!”


World's Strongest Viking 2015

A photo posted by Hafþór Júlíus Björnsson (@thorbjornsson) on

Feb 3, 2015 at 4:03pm PST
Thankfully, Björnsson's back held up just fine — a good omen as he prepares to compete in the World's Strongest Man competition. "NOTHING CAN STOP ME!! NOTHING CAN BREAK ME!!," he exclaimed on Facebook. 

Depending on his level of training, Björnsson consumes anywhere from 8,000-10,000 calories per day, revealing in an interview last year that he mostly sticks to a healthy diet

"My diet is rather high in carbohydrates, but I try staying away from junk-carbs and try eating more of sweet potatoes, brown rice and lots of healthier protein sources," he said. "If I get a craving for hamburgers or something like that, I will have it. The diet is not as much a hassle for strongmen as in some other sports, but I like to stay in good overall shape, and as far as acting goes, I believe that has to be a good thing."

Check out video of Björnsson's incredible feat of strength below. 

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Michael d'Estries ( @michaeldestries ) covers science, technology, art, and the beautiful, unusual corners of our incredible world.

The Mountain from 'Game of Thrones' just broke a 1,000-year-old strength record
Hafthór Björnsson recently conquered the World's Strongest Viking competition by carrying a 1,433-pound, 30-foot log for 5 steps.