Zac Efron Shows His Muscles on a Scooter on 'Baywatch' Set

Zac Efron arrives on the set of his upcoming film Baywatch on Tuesday afternoon (March 22) in Savannah, GA.

The 28-year-old actor later hopped on a hot pink scooter to film scenes with his co-star Dwayne Johnson, who wore a funny helmet and grabbed onto Zac as he steered the bike.

PHOTOS: Check out the latest pics of Zac Efron

Alexandra Daddario also filmed scenes with Zac that afternoon, where she could be seen lifting up her shirt and flashing him! She later took a life preserver and swung it at an oncoming biker.

50+ pictures inside from the Baywatch set…