Pingala Nadi

One of the vertical channels (nadi) in
the traditional conception of the subtle
body. The subtle body is an alternate
physiological system believed to exist on
a different plane than gross matter, but
with certain correspondences to the
material body. It is visualized as a set of
six psychic centers (chakras) running
roughly along the course of the spine,
connected by three parallel vertical
channels. Above and below these centers are the bodily abodes of the two
divine principles, Shiva (awareness) and
Shakti (power), the latter as the latent
spiritual energy known as kundalini. In
this model of the subtle body, the pingala nadi is the vertical channel on the
right side of the body. As with the rest of
the subtle body, the pingala nadi has
certain symbolic correspondences; in
particular, it is identified with the sun
and is thus visualized as being a tawny
red in color.