After a long day on the Baywatch set, most actors head for the cozy confines of their well-stocked trailers to kick back and unwind — not Dwayne Johnson and Zac Efron. While the production crew and talent called it quits, the two leading men were just getting started.

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As seen in The Rock’s recent Instagram post, neither star is one to back down from a challenge, which is why this monster tire-shrugging competition went for the long haul. And while Johnson appreciated Efron’s willingness to take on the challenge and desire to succeed, The Rock made it clear that he still kicked Zac’s “candy ass” when it was all said and done. Here’s how Johnson broke it down.

“Production for the day has ended, all the extras are going home and the sun’s going down. Me and @zacefron refuse to quit in a tire shrugging contest that lasted for hours. Why? Because we’re #BAYWATCH, we’re bad ass and we’re a slightly dysfunctional family. On a side discipline note juuuuuust wait til you see the insane shape my boy Efron got in for our movie. Proud of the hard work he put in. That’s the way you make a character ‘Iconic’. I still kicked his candy ass though in this contest. #OnSet #TwoMeatheadsActingLike12YearOlds #EpicFunThough #BAYWATCH SUMMER 2017″