The Rock Is Helping Zac Efron Get Totally Jacked For 'Baywatch'

The rule is simple: If you want to get ripped, follow The Rock. It looks like Zac Efron knows that well.

Efron, who will co-star in the 2017 "Baywatch" film with Dwayne "The Rock" Johnson, has been getting jacked for his role as Matt Brody.

Let's check the instant replay.

Here's a pic of Zac from 26 weeks ago...

...and here's Zac now.

Now, we have every reason to believe a big key to this major difference is being able to train alongside The Rock (I mean, how could it not be?).

Clearly, Zac is learning from the people's champ.

It's no secret 'round these parts we love when an actor kills it by getting his weight up for a sports movie.

We loved when Michael B. Jordan did it, and we loved when Jake Gyllenhaal did the same.

And even though Efron isn't starring in a sports film, we just couldn't ignore the fact one of our favorite sports heroes is backing him up.

That's so kind of The Rock, helping young Zac climb back into relevance.

UPDATE: I've been informed Zac Efron will always be relevant.

Whatever, if you guys say so.