I think this might be related to metabolic syndrome and insulin resistance and all sorts of things...I know I have what seems to be a hibernation response if I eat too many carbs..which is almost any whatsoever..I just get so I can't stay awake at all...now they insulin is givento us to store fat for the winter..I think it is all connected somehow and I am up to 12 hours a night now and wonder what it will be like in the dead of winter..oh well, I only h ave one job now...mg