If I remember correctly, he is English, so that may narrow our search. I was attempting to stop my own run away sympathetic overstimulation, when I came across the interview. He made a statement to the effect that exercising facial muscles is extremely effective for engaging the parasympathetic nervous system–in fact so effective that medical practitioners are reluctant to suggest that therapy. Being intrepid, and needing to stop my gastro-intestinal spasms (producing loose bowel movements), I gave my jaw muscles some good exercising. AND IT WAS EXTREMELY EFFECTIVE. My autonomic (sysmpathetic and parasympathetic) nervous system now seems back in balance. And I seem to have more control over what I am eating (I am mildly overweight).

Should I become successful in finding more information about Mr. Porgas I will send the info your way. (By the way I am a retired person with 3 science degrees, have conducted considerable original research in bio and psy, and have a great way of pulling pieces of info together for practical results.) I thought the info about exercising facial muscles was “a need to know”. Glad you picked up on it.

Does this, perhaps, help explain why we eat when anxious? By chewing, we exercise our facial muscles and that calms us. Our world has become very anxiety provoking, perhaps we eat to attempt to acquire some control over our sympathetic response, and that eating (movement of facial muscles), which also involves consumption of calories, is partially responsible for fueling the weight gains seen (particularly in the US).