To learn power yoga the students have different choices on the market today. There are power yoga videos, classes and even power yoga CD’s. It is important to choose a power yoga video carefully to make sure that the instructor is qualified to teach the class. Two famous yoga teachers are most often credited with the near simultaneous invention of power yoga: Beryl Bender Birch, based in New York, and Bryan Kest, based in Los Angeles, both have trained under with Ashtanga master Sri K. Pattabhi Jois. There are power yoga videos that give the instructors all that they need to be able to instruct their students. Good power yoga videos are the ones that are led by qualified instructors and also have more than one version of the workout depending on the level. The power yoga video should also offer modified versions of the various poses so that the beginners can use a modified position to make it easier and more advanced practitioners can use a harder position. read more..