Historical source of the balancing exercises?

[Vasilisa]

I believe I've asked this long ago but can't find it. What tradition are the balancing exercises rooted in? The way it's spoken of very specifically, I get the sense that it's coming from some hermetic teaching, Rosicrucian, Golden Dawn, etc. It sounds very daoist though too. Any help appreciated!

All that you have listed is part of the Western Mystery Tradition. You have correctly understood that the teachings of Ra are also part of this Tradition.

Dion Fortune, Walter Butler, Gareth Knight, Dolores Ashcroft-Nowicki. You will be surprised how much the work of these authors is in tune with the Materials of Ra.

And of course, these authors drew their inspiration not only from channeling, like D. Fortune's "Cosmic Doctrine" and E. Blavatsky's "Secret Doctrine", but also from joint ritual work. The founders of the Golden Dawn were both Rosicrucians and Freemasons .