The Twilight star showed off his "#summerbod" with a vintage photo on Thursday

By Lindsay Kimble
Updated August 05, 2016 11:00 AM
Credit: Source: Taylor Lautner/Instagram

Now we know where Taylor Lautner was hanging out in elementary school: Muscle Beach!

The 24-year-old showed off his impressive “#summerbod” on Instagram, Thursday, but the photo isn’t from a recent beach outing.

Taken in 1999, the #TBT shows Lautner, around 7, with an 8-pack and rippling arms. Lautner, who is trained in mixed marital arts, posed with Michael Chaturantabut, the founder of Xtreme Martial Arts.

“Beach flexing 99′,” wrote Lautner of the image.

Added Chaturantabut, who reposted the photo, “Ahhhhh the beginning…”

The Scream Queens season two star told GQ in 2010, during his time in the Twilight saga, that he works with a personal trainer to maintain his physique.

That doesn’t mean, however, that he loves being shirtless in every film.

“Originally I was supposed to take off my shirt [in Valentine’s Day]. The script said we were walking into school and [my character] Willy takes off his shirt. I said, ‘Whoa, whoa, whoa. Time out,” Lautner recalled at the time. “He’s gonna take off his shirt in the middle of school? No, no, no. The reason I took off my shirt for New Moon is because it’s written in the book that way. And there’s reasons behind it.”

Related Video: Taylor Lautner’s Changing Looks!

Last year, Lautner’s trainer Jordan Yuam advised Men’s Health that men seeking to emulate the actor’s trim frame need to eat right and follow a strategic workout regimen.