Mudra
Mudra are the other Posibilitiy in Hatha Yoga and these mudra use directly on the energy points. All the mudra have their special features and they works on the differents energy points in the body. Mostily Mudra works on the opening energy points(Kundalini) or activating as well as fixing the disorder. Mostaly the Mudra take action on the Mooladhar, Vishudhi and Manipur Chakra. Anahat and Swadhisthan get effect during different special asana. Agya take action during Madetaion. That is the system in Yoga. There are 10 Mudras exist in Hatha yoga out of this ten there are more than 12 other.
This mudra are:
Mahavedh -for Muladhar Chakra and shoot on Susumna(middle nerve) mouth.
Note:
There are 72 thousands track(nerves) in the body in them 72 are important. In 72, 10 are the most important. These are Gandhari, Yashaswini, Hastjivha, pusa, alambusa, Ida, Pingala, Susumna, kuhu, Shankhini. In all 10 nadis Susumna is the need of Yoga.
It is does not matter who birth in the world every body will be back in the earth whether burn or buried.
Simple guys like (me or you) or great persons (Budha, Jesus, Krisha, Rama ) great gurus (Patanjali, Vashistha, Valmiki, Padini, Agastya, pulasta) or great artist (picaso, michael jackson, ravishankar, shahrukh khan, amitabh, einstin, kali das, britney spears etc) all had or will have same end. Just who play important role in the special occasion like birth or death is Susumna.
In Yoga, there is much concentration around Susumna and much activities to activate and let is run. This all we do with our own effort and it is the special part of Yoga. It it is working and you learned to control itself you will have different end. How, that will be your own experience.
Mudra does take special role in the case of Susumna.
Other Mudra are Mahamudra-for Manipur, Mooladhar and vishudhi Chakra
Mahabandha for Mooladhar, Manipur and Vishuddhi Chakra
Moolabandha for Mooladhar Chakra
Uddiyana Bandha for Manipur Chakra
Jalandhar Bandha for the Vishudhi Chakra
Khechari for bindu and to holding the lifejuce (Melatonin Hormon)
Viparit Karni for vishudhi Chakra and bindu
Vajroli for swadhisthan Chakra
Shaktichalan (moving energy)
Out the physical mudra there are other approximate 12 to 15 hand mudra to regulate the internal energy, minerals, temperature, dhatus (basic substance-7 dhatus) and some special internal organs. These hand mudras works with the differents combinations of the finger tips. All the finger represents the five basic elements of the body and with the combination of this elements through fingers can be control as above things. There are more other finger hand mudra but they not use in Yoga. They use in indian classical dance or some other art movements because they are not made for internal changes.