I must be nuts. I'm attempting to give up caffeine. Tried yesterday to go cold turkey and had a horrible dull headache for most of the day, so I had a slug of Mountain Dew before bed.
This morning, I had my usual first cup of coffee, but I'm trying to avoid having the three or four more that I usually do. Maybe it won't be so painful if I wean myself off slowly. So far, so good. We'll see what happens later in the day.