You have probably heard that drinking water can be an extremely healthy for your body, but few know the calorie burning properties that water can have. Scientists and researchers have shown that drinking two liters of cold water per day can result in the body burning an additional 123 calories. For people trying to lose weight quickly, this can be nearly 10% of daily caloric intake.
The process by which the body burns the calories is related to the temperature of the water. When you drink cold water, it reduces the temperature of the body, which must work extra hard in order to raise your body temperature. This is often called a thermic cost, which can make your fat loss goals a whole lot simpler to achieve.
Source – Body by Science