Chakras
Chakra is an Indian word meaning "center" or "wheel." The
chakras are different centers of certain energies; the heart
chakra is one of many. They are usually located at the main plexi
of the nervous system and are very much linked with the nervous
system and its processes. Their function is mainly the coordination
of some basic physiological and autonomic discharge processes.
(Essence)

The Chakras do not function properly because of the body armor
and its patterns of psychophysical tensions. The work on the superego,
especially if coupled with somatic-energetic techniques, such
as those that employ breathing, is a powerful and efficient method
for clearing this level. It also guards against the fascination
and the excitement characteristic of direct work on the chakras.
(Essence, pg 140)

Each chakra has, associated with its mode of functioning,
psychological issues that must be worked through. The energy
can become strong enough to penetrate to the head centers, appearing
as the bejeweled, hooded cobra around the head. (Inner Journey
Home)