Watch: Jamie Dornan turns Conan O'Brien's desk into a pommel horse as he re-creates incredible 'party trick'
The Fifty Shades star pulled a muscle in the process
Most people are content with having a laugh when they go on US chat shows - but Jamie Dornan took things a bit further on the Conan O'Brien show.
It was a pose that the Holywood actor first created a stir with back in 2015 when he tweeted a picture of himself at Iron Fit Park at T13 in the Titanic Quarter showing off some serious upper body strength.
At the time he tweeted the picture of the pose saying "Gave them 2 seconds to take this picture before I collapsed and cried. #ironfit'."
But this week on the Conan O'Brien show he was challenged to re-create it.
He was discussing how on the next instalment of the Fifty Shades trilogy which hits cinemas on February 10 - the director wanted a scene of Christian Grey working out.
But instead of something conventional like weights, they wanted something different.
Dornan then told them about his "one party trick" he can do which requires a pommel horse.
And when asked if he could re-create it on the talk show, he gives it a go - before pulling a muscle.
Afterwards he states: "I'm honestly not exaggerating I just pulled my pec. That's not good. Did it look good?
To which Conan replies: "It looked amazing."