Hi there,
I found a couple of links for you:
http://www.life-in-motion.org/mdrc.html
http://www.fpnotebook.com/NEU105.htm
http://jnnp.bmj.com/cgi/content/abstract/76/1/47
Roll on July, yes take a break, we all need to now and again. I really hope you start to feel some improvement soon, sweetie, please take care (let us know what the rheumy say, though!)
xxxx
all the best