It is interesting to note that in mudras, by pulling any of your fingers in both hand and hooked them together render the following benefits to the practisioners.

Benefits
1 Pulling both INDEX fingers, hooked together Help to stimulate memory in case you have lost something.
2 Pulling both MIDDLE fingers, hooked together Help you with patience and discernment.
3 Pulling both RING fingers, hooked together Help energize you and stimulate intuitive insight.
4 Pulling both LITTLE fingers, hooked together Help with quick communication and understanding