Even when not drinking! I’m so lethargic, tired and headachey. I’ve tried cutting things out in my diet (eg careful with sugar or not drinking alcohol, which I did for 3 months) Nothing makes a difference! In fact having a glass of wine helps keep me awake a little longer when I do have it, otherwise I’m ready for bed at 4 or 5. For info im 44, average weight. Went to doctor a year ago and bloods were normal.