I drink my coffee over the course of a few hours, if I have to slam it down, say I suddenly need to leave the office, it makes me feel incredibly anxious and shaken. Taken slowly it has no noticeable effect except to my ability to get tired a tonight, I drink it entirely for the taste so that's actually a bummer. I've considered switching to decaf.
Mine start cold, it's two shots of espresso in a tall glass of cold milk and no sugar. Basically an iced latte without the ice (too much work!). I do love a nice warm coffee on a wintery day but most of the time I'm drinking cold coffee as it's pretty hot where I am in Australia.
I find hot coffee goes bitter by the time it cools down, but cold coffee stays about the same in flavor for a lot longer.
