As someone who has consumed copious * 10 amounts of caffeine, I would disagree. The tolerance to the diuretic effect isn't that much. What some people refer to as "tolerance" is more the effect of dehydration. Of course, drinking large quantities of water to balance the large quantities of caffeinated beverages isn't a brilliant idea either..
As others have posted, scientific evidence shows no diuretic effect. You are peeing a lot because you are drinking a lot. You would have to pee just as much if you were drinking water.
