Credit: Instagram/The Rock

After a long day of shooting Baywatch on the beach, how do Dwayne Johnson and Zac Efron wind down? With a tire shrugging contest, of course.

The actors posted photos to Instagram of their on-set competition. “Production for the day has ended, all the extras are going home and the sun’s going down,” Johnson wrote. “Me and [Zac Efron] 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.”

Who won? The Rock, who wrote that he kicked Efron’s “candy ass.” His costar admitted defeat but wrote, “come at me on the 50 yard dash and we’ll see what happens, Sasquatch.”

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See the pics below.

Baywatch stars Johnson as Mitch Buchannon, a by-the-books lifeguard who must team up with young hothead Matt Brody (Efron) to stop an oil tycoon from destroying their beach. The film will hit theaters on May 19, 2017.

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