Under certain conditions (like high heat and illness) the body can lose water very quickly, causing dehydration—a potentially serious health threat.
These recommendations are for healthy, sedentary people in moderate climate conditions. Greater amounts of fluids are needed for high levels of physical activity and/or exposure to high heat. The panel also found no convincing evidence that caffeinated beverages caused cumulative total water deficits.
Women
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73 oz from water, juice, milk, coffee, tea, & soda
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18 oz from fruits, vegetables and other foods.
Men
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100 oz from water, juice, milk, coffee, tea, & soda
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25 oz from fruits, vegetables and other foods