This might or might not be an energy-body depending on the definitions used.
It is a large dark cloudy structure near the bottom boundary of the Magick-universe version of the Physical-universe which is where all linear power-supply connections for energy-bodies connect up from. It influences the condition of power-supply connections to other energy-bodies, and is thus well worth processing in order to improve the potential condition of other energy-bodies.
In very good condition it is homogenous, but most humans on earth have various distortions or areas of density added to its structure.