It appears that no matter how much sleep I get, I'm still tired. It has begun to worry me. My thirst has increased, but I think that's largely due to the fact that I'm getting used to 1L+ per day again, and miss it when its gone. The only things that spring to mind are SAD, Diabetes [which I strongly doubt — although I always crave sweets, I'm not strongly overweight (BMI=26ish), and I don't bruise easily, which IIRC, is a symptom], or depression. But I don't feel generally depressed either. I'm sure I'll figure it out, or it'll go away.