My head feels as if I've been asleep for three hours this afternoon: heavy. My eyes are heavy too. For the same reason. But I haven't been asleep this afternoon. I never sleep during the afternoon, because it tends to make my eyes heavy and my head hurt. Nor have I been drinking last night. Or any night this week.
So, another aspirin before I go to bed and hopefully my head will be as light as a feather tomorrow!