One of the reasons Dr. Natelson believes CFS is a neurological disease is that team often finds patients have troubles with balance. it might not be that they are falling over all the time but they fail specific balance tests. Some people might be aware of Dr. Cheney's findings that patients cannot maintain what's called, I think, the Rhomberg test. (Stand feet together arms straight out at your sides at shoulder height and close your eyes and see if you can stay standing without swaying. http://en.wikipedia.org/wiki/Romberg_test Even I failed that one. Natelson had ME/CFS patients undergo ' deep fiber muscular' size and tested their balance on a computerized platform. He found that their balance improved. Why? It could be that muscle tightness interfered with the brains control of balance - basically the muscles were too tightened down for the brain to manage them effectively with regards to balance. Dr. Natelson noted that he was currently applying for a federal grant to assess the effectiveness of Rolfing (!) on fatigue and pain. (I don't think it went through unfortunately).