Zac Efron's Bulging Biceps Will Make You Swoon—See the Photo

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It's no secret that Zac Efron has a killer bod. The sexy actor regularly shows off his impressive physique on screen in films like Neighbors and Dirty Grandpa, as well as on his Instagram account, where he treats fans to swoon-worthy shots that are always worthy of double-tap, and his most recent upload is no exception.

Yesterday, Efron took to the social media app to share a photo of himself working out at the gym in preparation for his upcoming role in Baywatch, and his dedication is definitely paying off. "Back and bi's #baywatch," he captioned the photo, which shows the star decked out in an all-black workout ensemble and a backward baseball cap lifting dumbbells (below).

Unfortunately, we'll have to wait until to 2017 to see the hottie run into the surf to save lives in the Baywatch reboot, but thankfully we'll be able to see him shirtless in Neighbors 2: Sorority Rising when it hits theaters May 20.

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