How Much Water Do You Need?

It's very popular on the internet right now to tell people to drink a gallon of water a day, is that much water necessary? No, it isn't. Drinking too much water can cause an electrolyte imbalance and do more harm than good. It's best to drink when you are thirsty and if you are feeling hungry; if you are an over-eater your brain may mistake the thirst signal for a hunger signal.