yoga was scripted by the sage Patanchali who
invited the Lord Nataraja to Chidambaram.
God gave his darshan to the Saint at Chidambaram
and direced him to write a Yoga Sutra book.
This short Yoga Sutra book of Patanchali is
well known to the practioneers / sadakaas
of Hindu religious world. In this Sutra, the
Eight direction or the Eight fold practices
are as follows :
first four practices are called Antara Chaturangam
which in English means "Inner Practices".
The balance four are called Bahya Chaturangam
which in English means "Contemplating on
the materials of the outer world".
Pranayamam is the main driver of Sushumna Nadi.
Sushumna Nadi means a twisted coiled nerve like
a lengthy thin oiled tube open on both sides
resting on the bottom of the spinal cord.
At the end of the accomplishment of this Patanchali
Chaturanga Yoga, the practioneer gets the Eight
great results called the Ashtama siddhis. These
are as follows: