It may sound incredible, but drinking water can burn calories! Tests were conducted on subjects designed to measure changes in expired air. Simply put, by analyzing the subject’s breath, researchers were able to determine how fast they were burning calories, and whether the calories came from fat or sugars (glucose). Test subjects did not eat or drink for 90 minutes prior to the test.
Tests results showed that within ten minutes, energy expenditure increased. At thirty minutes, the metabolic rate was 30% above normal and the increase persisted for up to ninety minutes. The total thermogenic (calorie burning) response was approximately 25 calories. Considering the fact that water is very inexpensive and poses no toxicity risk (if purified), test results suggest that as much a 100 calories can be burned by drinking 16 ounces of water four times a day.
Further, it is postulated that even more calories can be burned if refrigerated water were used, since as much as 40 %of the calories burned in the experiment were used by the body warming the water from room temperature to body temperature. Remember that the definition of a calorie is the amount of energy required to raise the temperature of one liter of water by one degree Celsius. So, raising the half-liter of room temperature water (22 degrees Celsius) to body temperature (37 degrees Celsius) burns about TA. calories. Drinking refrigerated water (4 degrees Celsius) would burn an extra nine calories per glass.
While, at first, these numbers may seem insignificant considering the average American diet consists of 2,200 – 2,900 calories, the results over time are far from insignificant. Burring 100 calories per day equates top 3,000 calories per month and 36,000 calories per year. That is the equivalent of 10 pounds of body fat per year! The researchers estimate dropping another three to four pounds per year use refrigerated water.
Men and women reacted differently to test. Women responded to the increased metabolic rate by burning carbohydrates, while men primarily burned fat. Finally, researchers compared the thermogenic effect of water to ephedrine. One group of subjects drank 1.5 liters of water (three sixteen ounces glasses). The other group consumed 50 mg. of ephedrine three times a day. The water provides 60% of the thermic effect of the powerful (and dangerous) supplement.

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