13:27
"Back in 1945 the Food and Nutrition Board of the National Research Council stated that adults should take in about 2.5 liters of water per day (which is roughly the equivalent of eight glasses of water), but it also noted most of that intake level was already satisfied through the consumption of food without the need for the additional drinking of water. And as other nutritionists of the time noted, any shortfall in water intake could be made up through the consumption of beverages such as coffee, tea, milk, or soft drinks; one need not specifically drink water only in the form of water."