The solar plexus is an extremely important centre, and we must be careful to avoid whatever makes it tense because this, in turn, leads to the contraction of the blood vessels and other ducts and canals of the body. And if the blood and other body fluids can’t circulate fast enough, waste products build up on the walls of the ducts and can lead to serious health problems. The thing which most seriously upsets the solar plexus is the chaotic, tempestuous manifestation of disorder in the astral body: fear, anger, jealousy and sexual passion.
As the solar plexus is the reservoir of our life forces, this loss of harmony deprives us of our magnetic energy. So, it is possible to empty the solar plexus of its forces but it is also possible to replenish these forces, and it is this that a disciple must learn: how to replenish his solar plexus. Let me give you a few methods….

Omraam Mikhael Aivanhov – Izvor 219, Man’s Subtle Bodies and Centres