Just as there are countless currents of energy in the cosmos, all of which are
distinct from each other, so are there countless energy currents in the human
body. In yogic literature these are called nadis. Of the 72,000 distinct nadis
the yogis have identified, fourteen are of principal importance. Yogis have also
discovered the exact nature of these major energy currents, their pathways in
the body, how they interact with other energy currents, and what effect they
have on the body, nervous system, biochemistry, and mind. Then, realizing that
it is practically impossible to enunciate distinctly the sound that is produced
from the vibrations of each nadi, yogis with extraordinary spiritual powers
captured the entire range of sound produced by all these energy currents, and
divided them into fifty-one parts. That is how the fifty-one letters of the
Sanskrit alphabet were discovered.The yogis have also discovered that every
letter of the Sanskrit alphabet has its own color, shape, presiding force, and
unique transformative quality, as well as its own seer. They have also
experienced the relationship between these letters and different planets, stars,
and constellations. They have discovered the approximate location of these
letters in the human body and the particular pranic or psychological forces to
which they correspond.
Courtesy – cpdarshi