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I know, while most of us would probably be happy enough just setting a record and kicking back to bask in the glory, Björnsson has given us yet more reason to believe he's no mere mortal.
He was over at the 2019 Arnold Strongman Classic in Columbus, Ohio, where he performed a world record 474kg Rogue Elephant Bar deadlift - a feat he described as 'pretty casual'.
Yeah, sure. Casual.
"Pretty casual new WR Elephant Bar Deadlift 474kg/1044.9lbs," Björnsson - who stars as Gregor 'The Mountain' Clegane in fantasy series Game of Thrones - wrote on Instagram.
"Very happy with day 1 here at The Arnold Strongman Classic even though 501 will have to wait for another day. Looking forward to day 2. I appreciate all the support guys, thank you!"
In another post he added: "Huge thanks to my wife @kelc33 and my best friends @stefansolvi and @andrireyr for all the incredible help that I cannot thank you enough for!
"Also massive thanks to the rest of my family and friends!!! Thanks to the best coach in the world @australianstrengthcoach, the best nutrition coach in the world @stanefferding.
"Massive thanks to all my sponsors for sticking behind my back and believing in me @roguefitness @sbdapparel @nuunhydration @legionath."
Björnsson had set the previous deadlift world record at last year's competition, where he managed to lift 472kg.
But this year he was determined to do one better, raising his arms in triumph after dropping the bar to the floor.
And as if that wasn't enough, he also managed to place first in two other events, the Húsafell Stone Carry and the Austrian Oak, to become crowned the Arnold Strongman Classic champ for a second year running.
Martins Licis of Los Angeles, who won two qualifying events in the Arnold Pro Strongman World Series, ended up in second place, while Mateusz Kieliszkowski of Poland came third.
In a later post, Björnsson also wished a happy birthday to his wife Kelsey Morgan Henson, who he married last October, and also revealed that, since they've been together, he's never lost a competition.
"Happy birthday to my better half @kelc33," Björnsson said.
"Crazy fact... since Kelsey and I have been together I haven't lost a competition, I've just been on a winning STREAK!!! She's my lucky charm."
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