Taylor Lautner - Taylor Lautner's Shape Struggle

Taylor Lautner is amazed at how hard it is to keep in shape.

The actor famously bulked up for his role as werewolf Jacob Black in 'The Twilight Saga: New Moon' and admits retaining his physique for the third movie, 'Twilight Saga: Eclipse' was more difficult than he expected.

He said: "I did the same thing I did to put it on in the first place - a lot of hours in the gym. The most challenging part for me is the eating process," Taylor explained. "The interesting thing is it's just as hard to maintain it as it was to put in on in the first place. I didn't know that."

Taylor is finding it particularly hard to keep up with his fitness regime at the moment while he is promoting 'Eclipse' and is struggling to maintain his weight.

He explained to US TV show 'Access Hollywood': "We're busy promoting these films and I don't have time to get into the gym, I don't have time to eat, and I'll drop five pounds. It's pretty hard to put it back on."