To support you more, from [1]: "Contrary to popular belief, caffeine does not act as a diuretic when consumed in moderation (less than five cups a day or 500 t

To support you more, from [1]: "Contrary to popular belief, caffeine does not act as a diuretic when consumed in moderation (less than five cups a day or 500 to 600 milligrams), and does not lead to dehydration or to a water-electrolyte imbalance; current evidence suggests that caffeinated beverages contribute to the body's daily fluid requirements no differently from pure water." This particular misconception is kind of a pet peeve of mine, and it drives me nuts how widespread it is. [1]: http://en.wikipedia.org/wiki/Health_effects_of_coffee#Laxative.C2.A0.2F_diuretic http://en.wikipedia.org/wiki/Health_effects_of_coffee#Laxati...