Sanmukhi Mudra

Meaning: Sat- six; Mukha – face; Mudra – closing up
                 The Mudra is called so because the aspirant looks within himself to find the
                 very souce of his being by closing the six openings

Procedure:
Sit in padmasana. Inhale slowly. Then after a complete exhalation, hold the breathe by closing the ears by thumb, eyes by forefingers, nostrils by middle fingers, and mouth by remaining set of fingers. Observe inside (final sthiti). Then release the fingers on nose and inhale. After exhalation, repeat the same process five times

Benefits:
Senses are turned inwards
Calms the mind
Brings the feeling of inner peace and one can hear the divide voice of self within
This practise prepares one for pratyahara