extremely tired

This is how my weeks always end up. I am exhausted and I don't know how I am going to get through the day. I have two classes later in the afternoon. It's also, they say, going to get to thirty degrees so that's going to make it even harder. Meanwhile I have to write a lecture about the Queen in the next four hours. I admit this is not exactly the hell of an Indonesian jail, or falling out of a hot air balloon, or a bad disease, but nor is it pleasant - it's only COMPARATIVELY pleasant.