so I decided to try and drink 1/2 to 3/4 gallon a day. A gallon is 16 cups, so I am trying to drink at least 10 cups of water a day. Good grief it is damn near impossible I am 3 days in and ready to quit. Just decided to flush my system, change my diet and drop some weight. Someone suggested drinking a gallon of water a day. I don't think I can do it. anyone ever try this?