Practice:

Hold the thumb and index finger together lightly
while extending the remaining three fingers.
The thumb and index finger need only touch together,
without exerting any pressure.
Keep the three extended fingers as straight as possible.
The hands can then be placed on
the thighs, facing upwards.
Now, observe the flow of breath
and its effect.

Peculiarity:

Increases memory power and sharpens the brain

Time interval:

No particular time duration for this mudra.
You can practice while sitting,
whenever and wherever you
have time.

Benediction:

1.Better retention and concentration power
2.mproves sleep pattern
3.Increases energy in the body
4.Alleviates lower backache

Caution:

Nothing at all. Perform this asana freely.