Here is what I do to get in all of my water, but I drink 128 oz a day, four 32 oz. cups. I have bought a 32 oz cup with a big hole in the top and I have one at work and one at home, I like to drink water out of it because it pours out faster and I only really have to have two of them to get my 64oz in, but I drink four. I drink 64 oz before noon and then drink another 32 oz before 430 and I take the cup in my car on the way home and drink the whole thing....and yes I have to pee every thirty minutes....but it works.