Weird headache

Had a headache for more than a week. Not very bad, but unusual - the last one like that was probably five years ago.

A weird thing - I suspect that doing a certain kind of puzzles for too long gives me a headache. It somehow goes against my idea of how a human body is supposed to work, but coincides too often to be a coincidence. These are, unfortunately, the puzzles I find the most addictive.

Also I have always suspected that those mild but long headaches accompanied by a pulsing blood vessel on my temple have something to do with blood pressure. Yesterday measured the blood pressure when the headache was at its worst, and it was 120/78, so there goes that theory.