For me personally any amount of increase in activity will bring about an increase in neuropathic pain and fasciculations. I have tested extended periods of time with various differences in activity (more walking, more stretching, more core stabilisation exercises - I had a spine op). However, to keep severe pain at its lowest, I have to remain mostly homebound. I don't feel like this is the situation for most people, which is good. So I'm a case where exercise only seems to make things worse.