I am finding that as my CFS progresses year by year, my mental endurance has got less and less, to the point that now that just light socializing (say in the evening) for a few hours will often leave me very mentally exhausted and drained the following day - so exhausted that I may have trouble with even basic things like writing an email, or even just watching TV. I will take one or two days to recover from the mental exhaustion from several hours socializing. This activity really seems to overload my brain. However, physically, I am much better. I can still jog for a mile without much problem (on a good day), and usually I have little or no post exercise malaise. Is anyone else like this, such that their CFS is predominantly mental? I have the plenty of the other typical CFS symptoms, including: brain fog, useless memory, difficulty in spelling words, loss of drive and motivation, social withdrawal, anxiety disorder, gut problems, periodontal problems, sore throat, pins and needles, blurred vision, tinnitus, swollen lymph nodes.