The Sanskrit word mudra is translated as 'gesture ' or attitude .Mudras can be described as psychic , emotional, devotional and aesthetic gestures or attitude. Mudras have been described in various form antiquity to the present day in order to preserve them for posterity. A practical instructions from a Guru was always considered to be a necessary requisite before attempting them.
Mudras and prana :-
The attitudes and postures adopted during mudras practice establish a direct link between annamaya kosha , the physical body pranamaya kosha,the pranic body and manomaya kosha ,and the mental body.
A scientific look at mudras :-
In scientific terms mudras provide a means to access and influence the unconsciousness reflexes and primal, instinctive habit patterns that original in the primitive areas of the brain around the brain stem.
Classification of Mudras:-
1 Hasta or Hand mudras
2 Mana or head mudras
3 Kaya or postural Mudras
4 Bandha or lock Mudras
5 Adhara or perineal mudras etc

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