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This Is Ben Affleck's Exact Meal and Exercise Plan to Stay in Shape

The "Justice League" star is looking fitter than ever in his 40s thanks to this regimented routine.

Ben Affleck is nothing short of a chameleon on screen, whether he's portraying a harried CIA agent in Argo or suiting up to be Batman in Zack Snyder's Justice League films.

Of course, it takes more than acting ability to transform from role to role—Affleck has physically made himself over time and time again to embody the characters he portrays on-screen.

Read on to find out the exact diet and workout routine Affleck adheres to in order to maintain his fit physique. And for more on how your favorite stars stay fit, check out This Is Ryan Reynold's Exact Meal and Exercise Plan to Stay in Shape.

He keeps his cardio to a minimum.

ben affleck waving in a tan suit on a red carpet
Hector Vivas / LatinContent via Getty Images

To ensure he's building muscle but not losing too much weight, Affleck doesn't incorporate too much cardio into his routine.

In a 2016 interview with Men's Journal, Affleck's trainer, Walter Norton, revealed that Affleck usually starts his workout with 15 minutes of cardio at the maximum, either in the form of a quick workout on the elliptical or Airdyne bike sprints.

For more on how celebs tone up, check out Jessie J Reveals Her Exact Butt and Abs Workout.

He does weight-heavy workouts.

ben affleck posing in front of justice league banner
TOLGA AKMEN / AFP via Getty Images

To bulk up to play Batman, Norton put Affleck through a series of both bodyweight and free weight-based exercises.

These included everything from planks to cable rows to pull-ups to lunges, with Affleck exercising for close to two hours, divided into three blocks.

"We wanted him to be strong but we wanted to add mass. The volume was higher. We lived on a lot of the basics, 80-pound dumbbell curls, heavy-loaded carries, and farmers walks with 60-pound weights," Norton told Men's Journal.

He has his carbs in the morning.

ben affleck in front of batman vs superman sign in blue suit
Tolga Akmen / Anadolu Agency / Getty Images

According to Norton (speaking to Muscle & Fitness), when Affleck was getting into Batman shape, nutritionist Rehan Jalali designed a very specific diet for the star, including minimal carbs throughout the day.

However, in the mornings, Affleck would kick things off with a combination of oatmeal and egg whites.

He sticks to lean protein and vegetables for the rest of the day.

ben affleck in a black suit smiling on the red carpet
Kevin Mazur / Getty Images

Throughout the rest of the day, Affleck kept his carbs to a minimum. For lunch, the star would eat salad with a double helping with protein, then either chicken or fish with cauliflower, broccoli, or Brussels sprouts for dinner.

"We were seeing that in our sleep," Norton told Muscle & Fitness. "Rehan designed a great diet, and Ben followed it to the letter."

For more celebrities who've gotten into superhero shape, check out Chris Hemsworth Shares His "Ultimate Family Workout" in Hilarious New Video, and for the latest celebrity health and fitness news delivered to your inbox, sign up for our newsletter!

Sarah Crow
Sarah Crow is a senior editor at Eat This, Not That!, where she focuses on celebrity news and health coverage. Read more