The author of this article thinks these 40 Sanskrit words are required knowledge for yogis. Do you need to know these to practice the physical moves of yoga? No, but if you really want to understand the complete yoga package, these words will need to be part of your vocabulary. They are not so much about the poses as they are about the Eight Limbs, or components of yoga. If your want to understand the depth and breadth of yoga, begin with these words. You will be amazed what there is to experience outside of the studio.