For the most part they do not pack on muscle for their upcoming movie roles. They typically focus on losing body fat and gaining muscle tone. I would argue that none of these actors and actresses packed on muscle for any of these roles.

1) Jessica Biel in "Blade Trinity"

2) Daniel Craig in "James Bond"

3) Megan Fox in "Transformers"

4) Jessica Alba in "Into the Blue"

5) Brad Pitt in "Fight Club"

6) Jamie Foxx in "Miami Vice"

7) Demi Moore in "Charlie's Angels"

8) Halle Berry in "Cat Woman"

9) Angelina Jolie in "Tomb Raider"

10) Mathew McConaughey in "Sahara"

About the Author: Rusty Moore is a trainer who gives advice to men and women who want a body that attracts the opposite sex. Don't train to be bulky! Learn the workout routines of Hollywood's finest and get lean and sexy instead. Visit his site today... http://www.FitnessBlackBook.com