I just came across this piece on a study. The article is perhaps not that exciting overall, but thought I'd highlight a couple of bits I thought were a little interesting. I don't think it is discussed enough in the ME/CFS field that fatigue can have various components to it. For example, if one has a low mood, one may be tired but if one's mood lifts, one may not have that sort of fatigue. However, other sorts of fatigue may remain.