This one's for all you 'Twilight' fans -- because what would a list of shirtless hunks be without an appearance from sparkly vampire actor Kellan Lutz?

In order to get his impressive abs (which don't actually sparkle in the sun, even though they totally should), Lutz does a full body workout.

To stay in shape, he recommends small meals, working on developing a strong core, and quality over quantity.

As motivation, Lutz remembers how the girls in school used to react to his physique: "Where I grew up in Arizona, you would never see anyone without a shirt on at school. But when I took off my shirt, all the girls were, like, 'Oh, look at your abs!' And I was, like, 'Yeah!'"

(We said he was in shape. We never said he was eloquent.)