Mudras are gestures that facilitate the body’s natural Flow of energy. To me, Mudras are magical.  hastha Mudras in particular, are easy to learn and provide a method of aligning subtle energies.  Some Mudras use the entire body, others, such as hastha Mudras use only the hands. Each Mudra has a subtly different focus and Mudras can be combined with a slow or energetic physical practice, dependent on your need.