I'll risk one more, just because I stumbled about it while reading. Jung writes to Pauli: "I still suffer temporary seizures of tachycardia and arrhytmia and have to avoid mental strain. This letter was an excess that I should not try to repeat anytime soon. [...] My work on the "spirit of psychology" [?] from 1946 had caused a severe episode of tachycardia back then and [the work on] Synchronicity has given me the rest."

How could that happen? I suppose deep thinking is not listed as a common cause for heart problems but on the other hand you mentioned that magical practice could be problematic if one has a weak heart, with the GD style being more difficult to handle than DMH. So is there an occult perspective on this?

Thank you again,
Nachtgurke