Kellan Lutz Keeps Up His Best Summer Body

Kellan Lutz stays in shape as he attends boxing classes at his gym on Wednesday (July 21) in Northridge, Calif.

The 25-year-old Twilight actor was recently named Men’s Health’s #1 Best Summer Body beating out Taylor Lautner, Zac Efron, and Daniel Craig.

“Where I grew up in Arizona, you would never see anyone without a shirt on at school,” Kellan shared with the magazine. “But when I took off my shirt, all the girls were, like, ‘Oh, look at your abs!’ And I was, like, ‘Yeah!’” Psychologists call this “positive reinforcement.”

10+ pictures inside of Kellan Lutz keeping in shape and hitting the gym…