[edanm]

Very interesting what you write about caffeine. I've never been a coffee drinker, having never "developed the taste" for it, but I drink a lot of sugar-free soft drinks (Pepsi Zero is my preference).

I'm fairly sure it acts as my source of caffeine, because on days that I don't drink it in the morning, I get headaches. (It took me a while to connect this, I happened to be reading that headaches are a common symptom of caffeine withdrawal.)