"New Moon's" Alex Meraz is spilling to "Extra" about his wolfpack workout routine and the on-set pranks he pulled with co-star Taylor Lautner. Watch the video below.
Meraz got those ripped abs with "pretty hardcore" kettlebell routines created by a trainer who starred as one of the Spartans in action flick "300," he says. "The best part is that at the end of the training session, he gave us his red underwear from '300!'" Meraz adds.