Actor Jason Mamoa accepted Yoga is one of the hardest exercises he has ever done. 
 
Jason Mamoa, well known among people for his role in 'Game of Thrones". Following that,  he became famous all over the world by playing the role of Aquaman in DC Comics. 

In an interview with a weekly magazine, he said: “I did yoga practice a few days ago. That was the hardest thing I ever did in my life. I can pull over a car. El Capitan Mountain can be easily climbed. But doing yoga for two hours is very difficult for me. I could not bend. The muscles tightened. 

I was exercising for the movie 'Conan the Barbarian'. When I went to a yoga class for it, three old women were doing yoga with their arms raised above their heads. But it was very difficult for me. " Thus said Jason.