"[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.