In yoga the hand mudras are important for the energy of the body i think. I would like 2 questions because i dont understand what is the real science behind the hundreds of hand mudras. They are like to strengthen different chakras or to call gods? They say the Kubera Mudra is dedicated to Kubera, a demi-god of wealth according to Hindu mythology.
And last question. What mudra do you recommend to help reduce legs tension?
1. The Mudra (seal) is basically a tool to chanellize energy flow.
2. The Yogi desiring knowledge of the self, for liberation adopts the 'Chin Mudra' (also called 'Gnyana Mudra' - The Mudra of the absolute truth), wherein the tip of the index finger is joined to the mid-phalange of the thumb and the other three fingers extended outwards.
3. The little finger represents the 'Sthula Sharira' - Physical body.
The ring finger represents the 'Linga Sharira' - Astral or energy body.
The mid finger represents the 'Karana Sharira' - Causal body.
The index finger represents the 'Jivatman' - Soul.
The thumb represents the 'Paramatman' - Supreme Almighty.
4. By extending the other three fingers down, one is letting go of his identification with these three bodies, which he is not.
5. What now remains is the individual concept of the soul and the Almighty. By joining the thumb and the index finger, one is uniting the individual soul with the Supreme, signifying liberation.
6. This Mudra is most conducive during meditation or even at other times for the Yogi. It is the most comprehensive and superior of all the Mudra's, for the Yogi does not ask for anything other than liberation here, thereby staying with the path of 'Nishkama Karma' (efforts carried out for realization alone, as a part of Dharma, without expectation for the fruits). This inturn promotes 'Saranagati' (surrender to the Lord, accepting whatever he gives).
7. The Sadhana suggested, when carried out will root out all that is to be relieved, including leg tension.
ॐ तत् सत्
(That Supreme being is the absolute truth)