So yesterday I tried keeping good posture the entire day at work. I seriously never have to leave my desk, so there's tons of potential for bad posture. By 1:30 I was tired. It was hard to stay upright! I wanted to lean or slouch or hunch so badly. By 4:30 I was glad to be heading home, where I knew I'd be on my feet most of the night.

But there was a problem: I'd started to get a headache just before I left work. Then I got home and it got a little worse. By the time I was done working around the house around 9, it was a pretty bad headache. Not my normal headache which starts in my neck, but my skull was locked up. I fell asleep watching tv, which normally helps. Nope, pain was still there. I staggered to bed and spent a fitful few hours trying to sleep through the shooting pain in my skull. At 4AM I couldn't take it any more and popped some Excedrin. It took a while, but the pain finally subsided. My question: Could the headache be related to the effort of keeping upright all day? Like I was using new muscles and they cramped up? I very rarely get a headache where my skull locks like that, so I thought there might be a correlation.