The Rock surprises young patients at Savannah hospital

Dwayne "The Rock" Johnson, who with Zac Efron is filming "Baywatch" on the Georgia coast, took a break to visit young hospital patients in Savannah.

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"I surprised the children at Savannah's Pediatric Specialty Ward aaaaand look at the concentration on lil' Aiden's face!" the actor posted Saturday with the sweet photo above. "We shot #BAYWATCH scenes at Memorial Health Hospital and thought I'd pop up to the ward. Awesome experience and THANK YOU to all the hard working and caring staff who helped make this visit possible. To all the kids I met - you guys keep smiling and staying strong. All the mamas and daddys I met, y'all stay strong too.

"Gotta tell ya little stuff like this will always be the best part of fame.

And good Lord I wish I had Aiden's concentration when I was in my high school math classes. I wouldn't have failed Algebra twice!"

And good Lord I wish I had Aiden's concentration when I was in my high school math classes. I wouldn't have failed Algebra twice!"