The following article is all about the methods of the 300 workout that were done to get the cast of the movie 300 in such great physical shape. The lead role of Leonidas who is the king of the Spartan army is played by Gerard Butler. Sparta is about to be invaded by a huge Persian army, unfortunately the Spartan army cannot go to war because they are not given the blessing of the gods and therefore no support from the cities council. Against the will of the gods and council, Leonadis leads a small army of 300 soldiers to fight for his beloved Spartan. Butler had never been called fat, but that is exactly what he was called when he got the lead role in this movie. Despite what he may have started out as, the 300 workout regime got him in phenomenal shape as evident on screen.