Today I'll tell you about a very effective and extremely powerful mudra. First of all understand what mudra is?  Mudra can't be explained just in few words but  it can be said mudra is a mystical  bodily gesture  which has it's own benefits whether it is physical, mental or spiritual benefits.  Mudra are said to be more powerful than physical yoga postures because mudra has the direct effect on your etheric , astral and causal body. And when the blockages in your etheric, astral and casual bodies  are eradicated, it makes your physical body very healthy and  glowing. 
 Gyan mudra which means Gesture of wisdom.  You are the micro cosmos and when you emerged macro cosmos within you, you become like a creator  or you can even say that you become the creator and you start creating your desired destiny. 
In Gyan mudra we join together the tip of our thumb and index finger.  Thumb represents the marco cosmos  or the cosmic universe and index finger represent your embodied soul or your human consciousness. When we joint thumb with index finger, our ordinary consciousness connect with the cosmic or divine consciousness. And when both thumb and index fingers are connected it creates tremendous energy which develops intuition power and inspiration. 
So let us begin the Gyan mudra. 
Now fold the index finger of both of hand towards the thumb & join the tip of your index finger with the tip of the thumb. Leave the remaining three fingers extended.. Don't separate your other extended fingers, make them close to each other. So that energy will not scattered. 
The pressure between the tip of thumb and index finger should be very light, this is called Gyan mudra.  It can be done any time while walking, sleeping, meditating, reading  etc.  To get the maximum benefit from this mudra,  perform this with meditation and breath work.  
Note:This is just a general information about gyan mudra for learning advanced  yogic techniques you can contact us on our phone number or email us.