Caffeine

Is that how you spell it? I don't care enough to check.

Anyway, I was wide awake til about 4 or 5 in the morning last night, presumably because I had drunk a cup of coffee in the morning and a cup of tea in the evening. I normally have no caffeine whatsoever.

It wasn't all bad because I didn't have that horrible tired-but-can't-sleep feeling; I was just wide awake. So I did my work. Quite well, too!

I was wondering if it has such a strong effect because I used to drink a lot of caffeine then went straight to having none. Would that make it worse? I don't know.