The
  word Chakra is Sanskrit, and signifies a wheel, the chakra system is a series
  of wheel-like vortices which exist in the etheric or subtle body. This
  invisible part of the physical body is of great importance to us, for it is
  the vehicle through which flow the streams of vital energy which keep the
  body alive and without it as a bridge to convey undulations of thought and
  feeling from the astral to the visible. The chakras or awareness-centres are
  points of connection at which energy flows from the subtle body to the
  physical body. When quite undeveloped they appear as small circles about
  two inches in diameter, glowing dully; but when awakened they are seen as
  blazing miniature suns much increased in size. All chakras correspond to certain
  physical organs, t hey absorb, digest, and distribute prana to the different
  parts of the body, They control, energize, and are responsible for the proper
  functioning of the whole physical body and its different parts and organs;
  for example the endocrine glands are controlled and energized by some of the
  major chakras. The endocrine glands can be stimulated or inhibited by
  controlling or manipulating the corresponding chakras. Many ailments can be
  caused by blockages of the chakras. Some chakras are sites of the psychic
  faculties. Activation of certain chakras may result in the development of
  certain psychic faculties. For example, if you activate the hand chakras
  which are located at the center of the palms you develop the ability to feel
  subtle energies and the ability to feel outer energies, health, aura and
  chakras states, etc. 
     
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