joegrane
Copper is involved in production of noradrenaline. Maybe the flushes have improved bile flow and reduced copper.
Are you also less motivated or at least less intense during the day?
I notice a difference in those areas as I tweak my intake of Cu. I seem to tend to be on the low side. A Cutler in his writings hints that people with a cadmium problem tend to like additional Cu. That fits my situation quite well.