I have fibromyalgia and chronic fatigue syndrome since I was a kid. Occasionally I get flare ups that put me in bed for months. In those times I only have energy to get up and use the toilet then back to bed. Everything gets hard, including showering, eating, talking, sunlight.
But lately I am experiencing marked improvements on the Guaifenesin protocol. It is not an easy protocol to follow, but it really does work for fibro and CFS.