Posture: “The method for purifying and strengthening the body is called asana” (Jois 2002 22). In Ashtanga yoga, asana is grouped into six series. “The Primary Series [Yoga Chikitsa] detoxifies and aligns the body. The Intermediate Series [Nadi Shodhana] purifies the nervous system by opening and clearing the energy channels. The Advanced Series A, B, C, and D [Sthira Bhaga] integrate the strength and grace of the practice, requiring higher levels of flexibility and humility. Each level is to be fully developed before proceeding to the next, and the sequential order of asanas is to be meticulously followed. Each posture is a preparation for the next, developing the strength and balance required to move further” (Pace). Without an earnest effort and reverence towards the practice of yama and niyama, however, the practice of asana is of little benefit (Flynn).

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