'It was the best of times, it was the worst of times...' – Charles Dickens

I've been feeling cold and tired all day. This is despite getting eight or nine hours of sleep last night – although I was a little restless at first – and it being a sunny, almost twenty degree day. In the afternoon I had a bath to try to warm up. I lay on the couch reading for a while but didn't actually fall asleep. The thing that bothers me about these feelings is I don't know if they're normal weekend lethargy after a busy week or if they're pre-cursers to a migraine.

How do you tell the difference between normal life-effects and symptoms?