Many esoteric movement practices, such as martial arts and sacred dance, lead to the production and purification of energy in the body. The development of a fluid and flexible body, and the development of iron-willed determination to practice every day are all steps on that path. Over time a new substance is created in the body.
There is an ancient tradition that when the mind is completely quiet, knowledge and crystal clear awareness arise to the surface. A person may strive their entire life for the arising of such perceptions.

