Mudras are certain yogic postures of hand and body which contracts, pressurizes and relaxes certain anatomical parts. This in turn helps in activating certain glands and hormonal secretion. A voluntary neuromuscular contraction with the help of which the Pranya is controlled and directed through a particular Nadi,is known as MUDRA. Here,MUD means to be happy and Ra means to give.An action that gives extreme joy.