Started feeling very rough yesterday, bad headache/sore throat/aching body/cold, etc.
At first, I thought it might be caffeine withdrawal, since I hadn't drunk any coffee since Saturday. I understand that withdrawal sometimes can exhibit flu-like symptoms, or so I have read anyway.
Today, I got my daily dose of poison in, but I now don't think it was caffeine related. I feel better than I did, and I'm making extra sure to keep warm and drink plenty of water.
What I don't get is, we're in the cold part of the year, so I would assume that these conditions would kill off the bugs, but if I am going to get ill, it almost always seems to be during December/January.