Outer
level: Can be literally translated as chastity or celibacy or, if
in a relationship, monogamy. Discipline relating to diet, sleep, hygiene
and other factors that aggravate or enhance the activity of the mind
and appetites of the body.
Inner level: Renunciation
of things which increase worldly attachment.
Transformation of energy that is normally
spent going out to the fulfillment of the senses towards energy that
can be used for spiritual practice, for living in balance, for seeing
one's life with greater clarity.
Secret level: "Knowledge, courage, and energy flow to the one
who is disciplined in relation to his/her physical desires."
Yoga Sutra II.38, Sadhana Pada
Further
commentary is forthcoming...!
see also Ahimsa,
Asteya, Satya, Aparigraha
