Whether you drink tea or coffee there are a lot of myths being pushed on the internet about caffeine
while it is true that caffeine increases the rate of urination because of its diuretic affects,
this is easily compensated by the amount of water that is generally in the common tea or coffee types.
Sure, it is not wise to be drinking a lot of it during a workout at a gym or during a summer heatwave because you'd be sweating in combination with increased urination, and in that case you should be drinking pure water, and ensuring your electrolytes are balanced and what not. But the vast majority of the time coffee and tea don't cause health problems, this is a fact and health related websites do back this, thoughty2 isn't rambling about nonsense about that.