Howard Schubiner mentions PG in this podcast
https://open.spotify.com/episode/40CUczxOiNU869PxOqhkHZ?si=dg1iTGTkQ3WhSHc6xGDB0A
He says that they are good friends and PG had a "click" moment, where he understood that his symptoms were mild-body, because sometimes he could cycle further and not feel too bad and some times he did less and felt worse. He concluded that PEM made no sense to him because it was so inconsistent, so the symptoms
must be mind-body and he could therefore unlearn them. This is the classical conditioning/fear response paradigm for ME.
This conversation sent me down an absolute rabbit hole to investigate mind-body symptoms, as discussed further on this thread:
https://www.s4me.info/threads/brain...e-cfs-and-long-covid-discussion-thread.40713/