Mudra is a Sanskrit word meaning seal. In yoga, the practitioner seeks to unify disparate elements of the self, and balance the right and left sides of the body, the masculine and feminine energies of the ego. Mudras in yoga offer a unique opportunity to use the creative choreography of the hands to help facilitate union and deeper opening. As John Campbell, Ph.D., a professor of religious studies at University of Virginia, explains in this video, mudras are incorporated into the flowing practice not only for spiritual metaphor but also for physical assistance.
Related: Yoga Mudras to Shift Your Energy in Body and Mind