Taylor Lautner

For those who don'€™t follow teen chick vampire flicks, Lautner is the werewolf/man hybrid in the (endless) Twilight Saga. As a wolf, he’s all furry and sleek. As a man, he’s seriously buff. He wasn’t always like that.

Before his debut in the series, Lautner worked out five days a week and gained 30 pounds of muscle in one year. €œMy character continues to grow, so I'd like to pack on at least a few more lean pounds, he told Men'€™s Health in 2009.