Mudras are the developed form of Yog Aasans. There is no other action in this world that gives same results as the Mudras.

 

Hand Mudra regulates the elements:  It helps in awaking the Kundalini & upward movement of Pranas.  Stimulkating one part of the body can have a positive effect on another part of the body.  Mudra is a veryy exact and scientific yogic function by which one can develop or even change, one's internal and external dispositions i.e. mental ( anger, emotional disturbance, intelligence etc )  Spiritual ( concerntration, meditation ) or physical (in various diseases, illnesses ).

 

The five fingers in our hand represent the five elements, such as, Thumb - Fire, Index Finger - Air, Middle Finger - Space/Ether, Ring Finger - Earth, and Little Finger - Water. These five elements control the internal glands, body parts, and their functions. The body remains healthy, if the five elements are in balance. Mudras generate powers to provide all around development of mind and body. Some Prominent Mudras are: Gyan Mudra, Apana Mudra, Vayu Mudra, Apana Vayu Mudra, Surya Mudra, Varuna Mudra, Adi Mudra, and Linga Mudra.