In July, news broke that Miles Teller had been cast in Top Gun 2 — officially titled Top Gun: Maverick. Teller will play the son of Nick "Goose" Bradshaw, who as you may remember, was the best friend of Tom Cruise's character Maverick in the original 1986 film. Teller's character will be Maverick's protege.

He'll also be super buff. With filming for the sequel underway, Teller was recently spotted leaving a gym with his muscular arms on display.

The formerly brunette Teller was also sporting lighter locks and a mustache, much like Goose.

It's not the first time Teller has hit the gym for a role.

The actor got ripped for 2016's Bleed for This, a film about a newly-famous boxer who breaks his neck in a car accident.

Teller worked with nutritionist Gary Kobat and trainer Darrell Foster to go from 188 pounds and 20 percent body fat to 168 pounds and just 6 percent body fat, according to Men's Journal. He cut out alcohol and avoided cheat meals. He trained like hell for five months straight, each day consisting of a five-mile run and a ton of boxing.

"The first thing was a long run to get the cardio up. I had to be able to last through a full boxing match during filming, so we had to build that up," he said. "Then it was about four hours of shadowboxing, focus pads, heavy bag, speed bag, and jump rope. Once we got through that, we would do weight for about two hours. It ended with running through some of the combinations in the scenes for another hour or so. Then I had physical therapy, so we were spending the entire day in the gym."

What else do we know about Top Gun 2?

Val Kilmer will be returning to reprise his role as Tom "Iceman" Kazansky, and other new faces to the franchise will include actors like Jon Hamm, Jennifer Connelly, Insecure's Jay Ellis and The Good Place's Manny Jacinto, as Deadline reports.

The film, which was originally supposed to be released in July 2019, has been pushed back to 2020, after Paramount announced it needed more time to figure out filming logistics of the flight sequences.

And while the plot details have been mostly kept under wraps, Entertainment Weekly reported that Connelly will play a single mother working at a bar near the air base, while Ellis and Danny Ramirez will play pilots.

Director Joseph Kosinski told ComingSoon.net that while he doesn't want to totally "remake the first movie" and that the sequel "has to adapt," he also said that he wants to "recreate the experience of that movie, which gives you a front-seat into the world of naval aviation and what it's like to be in a fighter jet."