I came across this About.com article about how to keep fibro muscles loose, which can be a challenge. Just thought I'd share it here for you all to read and comment about it.
http://chronicfatigue.about.com/b/2011/12/02/loosening-up-your-muscles-with-fibromyalgia.htm
I've been very stiff lately, and have been having lots of symptoms all at once. I will need to see if I can vary my routine a bit to make a difference.