B. The Anti-Parasite Cleanse
There are several causes for fatigue, and playing host to a parasite can certainly produce the symptoms of muscle aches and exhaustion.
Anyone can get parasites. It is estimated that half the population is living with some kind of parasite in their gut. You can get it from any pig product, meat, raw seafood (sushi), and even lettuce. It can be ingested by drinking unclean water in certain foreign countries.
Different species of parasites produce different symptoms. Certain types of parasites cause symptoms so similar to fibromyalgia, that it would be an obvious choice to try the parasite cleanse.
For more information on how to do this cleanse, read Natural Cures to Eliminate Parasites.