Originally Posted by girl_geek I've heard different opinions and studies about how much water you should drink ... I always hear you should drink 6-8 8oz glasses a day (so I guess 8x8=64 oz is a gallon, right?), but I have also heard studies say that as long as you are getting at least 48 oz of FLUID a day it's all right -- and fluid includes things like fruit juice, liquids naturally found in foods (fruit, soup, etc), but does not include caffeinated drinks (since caffeine is a diretic (spelling?)) and some scientists also exlcude alcohol from the list. Of course these studies were just for general health, not necessarily losing weight... I certainly know people who have lost a lot of weight without drinking a gallon of water a day! I think 64 oz is only half gallon. I have also heard that 1/2 oz water per pound of body weight. That is what I do. Also if I get a 10 oz glass, I seem to get more water in than if I have a sports bottle of 16 oz or something. I just feel the glass up, drink it, then about every hour I drink another. I do this early in the day, as not to have to pee at night. Hope this helps