EXCLUSIVE: Dwayne Johnson and Kevin Hart Debate Who's in Better Shape

ET sat down with the stars of the hilarious upcoming film 'Central Intelligence' where the comedy duo tackled the question of who's in better shape.

ET sat down with Central Intelligence co-stars Dwayne Johnson and Kevin Hart, getting the comedy duo to tackle the question of who's in better shape.

The two both have a habit of posting their workouts on their Instagram pages and each agrees that they're the most dedicated fitness fanatics, but Johnson broke down a crucial difference.

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"[Hart] gets up at five, six o'clock in the morning. He does his workouts. He's working out all day. He's crazy. He's a maniac," Johnson told ET. "But here's the thing. I'm a bad motherf**ker when it comes to working out. I lift the gym. I lift everybody in it."

While Johnson's strength is undeniable, Hart maintained that as far as fitness goes, he can hold his own against the best of them.

"I'm very much in shape," Hart assured. "I'm a specimen. Looking at my body, it's definitely something you look at and go, 'Whoa!'"

In the action-comedy, Johnson and Hart play high school buddies who reunite. As his 20-year high school reunion approaches, a once-popular jock (Hart) is contacted by a former classmate who was bullied and humiliated back in the day (Johnson). Now the "geek" is a contract killer for the CIA, who ropes his old classmate into a secret and deadly operation.

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While the movie is completely fictional, their characters' backstories might actually resemble what the actors' high school experiences were like.

"I was the most popular kid in high school," Hart said. "I wasn't the cool guy, but being funny made me cool. It's a fact. Look it up."

"I can't argue with that," Johnson said. "He was funny in high school. He was cool in high school."

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Central Intelligence hits theaters June 17.