K-Lutz Impressed With R-Patz's Workout Regimen

Let’s just say, for the record, we’re impressed with both of you.

Twilight star and gym rat Kellan Lutz recently talked about how impressed he was with R-Patz‘s workout regimen on the set of Breaking Dawn.

And more importantly, how Robert got those amazing back muscles.

The two even shared protein recipes! How delicious.

Ch-ch-check out Kellan’s interview (above).