A mudra Sanskrit: "mark", or "gesture" is a symbolic or ritual gesture. While some mudra s involve the entire body, most are performed with the hands and fingers. A mudra is a spiritual gesture and an energetic seal of authenticity employed in spiritual practice. In yoga, mudra s are used in conjunction with pranayama (breathing exercises), generally while seated in Padmasana, Sukhasana or Vajrasana pose, to stimulate different parts of the body involved with breathing and to affect the flow of prana in the body. Mudra positions are usually formed by both the hand and the fingers. Along with asanas they are employed statically in the meditation. Each mudra has a specific effect on the practitioner. The main source of Mudra are Gherandya Samhita and Hathyoga Pradipika.