If you look on the ingredients list on the typical coffee tin, you'll see the only ingredients are coffee beans and preservatives. Every chemical mentioned above is made by the coffee bean plant. (I think)



I used to drink coffee every morning, but when I realised that the reason that in the afternoons: I was not really seeing everything properly, my brain didn't seem to want to co-operate with me, I felt all sleepy and stupid, I couldn't concentrate, and I kept falling asleep mid-lesson .... might be due to my daily dose of strong coffee, I quit it and had bad headaches for about a month ... but now I am completely not dependent on coffee ^_^ Which is doubly-important since I have physics, normal maths then AME on wednesday afternoons [xx(]