Interestingly, my symptoms started around the time that I was eating very well, losing weight (was't overweight to begin with) taking supplements and exercising regularly. I just returned from a 3 mile fast walk. I make myself do as much as I can to prove to my nervous system that my body is still capable. But my hands shake even now as I write this and my muscle tone - even in my face - has gone slack. I am a young 64 year old, who up until this year, could hike steep climbs, rode 50 miles on bike, swam across lakes, did hot yoga, etc. Trust me, if this was something could be overcome with stretching and exercise, I wouldn't be feeling this way.