In preparing for his starring role as T'Challa in Marvel's "Black Panther," Chadwick Boseman has had to do a lot more than practice sitting on the throne of Wakanda. He's also undergone intensive martial-arts training, as the actor revealed in a new behind-the-scenes video.

Boseman makes it look easy in the footage as he parries the attacks of a training partner, who appears to be wielding a stand-in for a weapon -- possibly a knife. One can only speculate how many hours it took to get this choreography down.

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The actor's post also quotes the founder of the Japanese martial art of Aikido, Morihei Ueshiba, who said, “The purpose of training is to tighten up the slack, toughen the body, and polish the spirit.”

Directed by Ryan Coogler (“Fruitvale Station,” “Creed”), “Black Panther” stars Chadwick Boseman as T’Challa, alongside Michael B. Jordan as Erik Kilmonger, Forest Whitaker as Zuri, Lupita Nyong’o as Nakia, Angela Bassett as Ramonda, Danai Gurira as Okoye, Daniel Kaluuya as W’Kabi, Winston Duke as M’Baku, Sterling K. Brown as N’Jobu, Florence Kasumba as Ayo, Martin Freeman as Everett K. Ross and Andy Serkis as Ulysses Klaue. The film opens February 16, 2018.