I don't know anything technical about them. But, i think that i finally have some inkling as to how to deal w/ them!

I had success w/ PhRing, but always questioned it. Then, the more successful i became, the more hesitant i became b/c i just couldn't believe such success would continue. I finally stopped PhRing b/c of the stress of the PhRing process. It just seemed too illusive for me. I *conquered* it so to speak, & then stopped. I started up again this past summer for a course i was taking & have been continuing it ever since.

After reading about the experience of others who did Pete's exercise, i finally started to feel something in my body, i.e., mouth watered, stomach twitched, feeling in my thighs as i PhR intense material.

I may be in left field w/ this response, but this is what i consider Perceptual Defenses and Repression Mechanisms. I just had a considerable amount of fear in my ability to do it.....even though i was successful from the beginning.