Two interesting things I read about caffeine/coffee recently. First is that most Americans get the majority of their anti-oxidants through coffee. The news article said it wasn't because coffee has a huge amount of antioxidants, its more that coffee is consumed in such large quantities. Thought that was interesting. Second is that caffeine may not be a diuretic at all. The article was out of a recent National Geographic recently, I think last July. It said that research done at an exercise science school (I don't remember the name) was trying to prove caffeine isn't a diuretic. Now, I have long known/read that caffeine isn't a diuretic while exercising, that somehow the act of exercising takes away all of the diuretic effect (athletes who take and don't take caffeine urinate the same amount). This school was trying to say it wasn't a diuretic at all. It said one reason why people think it is, is because of the frequent urination following drinking caffeine. It said urinating a large amount is just attributed it to drinking large amounts of liquid, and nothing about the caffeine. So, basically a glass of tea or coffee hyrates you just as much as a glass of water. With my last comment, I always knew a glass of tea/coffee had a net effect of hydration, I never thought it would be the same. Now, I haven't looked up the sources of the article, so take this with a grain of salt.