I don't think that this thread is overly negative. Exercise is a "hot potato". There are societal expectations and many of us grew up believing that laziness is a sin. Each of us has had to defend ourselves from medical dogma, to family and friends...coworkers. We are not in the mood to defend what we can and can not do here in a community that is supposed to understand.
The message that I am hearing is that exercise is ill-advised until someone recovers to a certain point. Then, it is still "proceed with caution". There seems to be a consensus that exercising too soon is at best, non-productive and at worst, destructive.
I was just thinking that a person following a stroke heals to a point and then benefits from neuro-training. Another with a broken wrist heals to a certain point and then benefits from physio. In the first instance, neuro-retraining will accomplish nothing if undertaken before the inflammation has settled and in the second a person will damage their wrist if they start physio too soon. Just thinking...it's a work in progress.
Those who have reached a point in their recovery when they can take on some activity are saying that they feel improvement in their symptoms (fatigue and brain-fog for me). It has been correctly pointed out that this may not extend beyond what anyone, regardless of whether they have ME, might be expected to experience. While this idea seems reasonable, it seems interesting that it is supported (entirely?) by those who are not well enough to engage in a significant level of activity yet (no judgment....ever).
I think that it is interesting and relevant that a few of us who have been able to do this are saying that we are not so sure that exercise is not helping us beyond what might be generally expected. I don't think that we should be discounted 'out of hand'. There are many things yet to learn about ME and recovery from it.
Whether it is something along the lines of BDNF or if it strengthens energy pathways, I pray that each of you can find out for yourself some day. brad