I do the same thing. I believe its where our sleep is never restful that every so many days our bodies have had enough and we sleep and sleep. I've been dealing with this for fifteen years and it always happens so its just fibro doing what fibro does. Gentle hugs to u all.

I recommend you ask to be tested for Narcolepsy

Mine hits me on weekends too! My motivation drops and fatigue hits hard. I sit drowsy.

i too have days when all I do is sleep.my Gp has has put this down to chronic fatigue syndrome

I, too, suffer from what I call "coma naps" that come on episodically. I will be standing in front of the class teaching and nearly hallucinating from fatigue and the urge to sleep! It is horrible! The only thing that relieves it is sleep, but I cannot nap with a room full of ten year olds. Even driving home from work, I fight to stay awake. Most often these attacks begin in the afternoon, but sometimes they last all day. I found Excedrin Migraine can ward it off for a few hours until I can nap. I was tested for sleep apnea and that was ruled out. I do have RLS and a "weak breathing pattern," and I take Requip for that. However, these events can occur after what seems to have been a restful night. So weird.