Robert Downey Jr . has spent plenty of time surrounded by glowing walls of green and blue during his decade playing Tony Stark , but it turns out digital environments aren’t what test his acting skills. The MCU vet previously revealed his real challenges during a laid-back interview. The slate of new Marvel movies may be known for their heavy use of CG and on-set reference screens. Yet, the Oppenheimer Oscar winner explained that the most complex parts of acting have nothing to do with pretending an alien army is floating above him.

During the interview with Jimmy Fallon on The Tonight Show , RDJ explained the scenes that give him the most headaches, and they don’t involve green screens. Instead, he was explaining the everyday moments that most actors take for granted. As he

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