thanks. my wife, a.k.a. the warden, keeps telling me to watch out because i'm drinking too much water but i'm only drinking about 100 oz a day. my camelback holds that much and i'll go through a full bladder when i'm mountainbiking so i didn't think it would be a problem. i thought i had read somewhere that 2+ gallons a day could start to give you trouble but i'm glad you reinforced my beliefs.