Star Wars fans get Jedi workout with light sabers

Golden Gate Knights instructor Alain Block, left, and Gary Ripper, dressed as Darth Vader, demonstrate light saber moves during class in San Francisco, Feb. 10, 2013. A group of San Francisco Star Wars fans who want to travel to a galaxy not that far away have created a combat choreography class for Jedis-in-training with their weapon of choice: the light saber.

Credit: AP Photo/Jeff Chiu