Water intake is so unbelievably important, we need to consume no less than half our body weight in ounces. This is with no activity, at all, if you live an active lifestyle, your water intake should be increased. Another factor to hydration is location, I am currently located in an inherently dry climate all year round, Phoenix, AZ, we start the day at a dehydrated state. A good rule to abide by would be, to have 8oz of water every 2hrs. Remember, water is our life source. Soda, tea, energy drinks, and coffee only aide in the dehydration efforts, as they are all diuretics.