Adam Driver is fighting dinosaurs in his action film "65."

The actor has previously appeared on screen in "Star Wars" and "Silence."

He has told the publication the fact that "Silence" is actually "the most physically demanding role" of his career.

Driver was a few years ago aware of how much weight he needed to shed for the job.

Then he had to maintain his weight for 4 months!

However, he acknowledged that "65 was most definitely physical.

His co-star Ariana Greenblatt has said that she"was "100 percent" the most physically demanding part of her career.

Ariana Greenblatt is well-known for her performance as an infant Gamora on the film "Avengers: Infinity War."

"65" hits theaters on March 10.