Kellan Lutz Is a Boxin' Beauty

Now we know how Emmett Cullen gets so buff — he boxes. Kellan Lutz was spotted outside of a gym in Northridge, Calif. on Thursday showing off one way he keeps his hot body in shape as he took part in some boxing exercises! The hunky Twilight heartthrob suited up and looked tough with his gloves and aviator sunglasses!

Kellan has been popping up all over the red carper, and we aren't complaining.

OK! VIDEO: KELLAN LUTZ PRAISES HIS UPCOMING LOVE INTEREST ASHLEY GREENE

He has also been getting very close to girlfriend AnnaLynne McCord and the couple isn't trying to conceal their relationship anymore!