I don't drink a lot of the stuff, but I haven't quit. I used to drink about a litre of brewed coffee a day, starting at 7AM and going on until 5PM. Eventually

I don't drink a lot of the stuff, but I haven't quit. I used to drink about a litre of brewed coffee a day, starting at 7AM and going on until 5PM. Eventually that fell away, without any decision on my part, and I now drink one mug a day (1/2 imperial pint), after getting up. It doesn't seem to power me up or make me more alert; I think it actually makes me dozy, 2-3 hours after my morning joe. That is, I think I only notice the crash.