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>Drinking water appears to stimulate thermogenesis, or heat production, in the body, particularly when it's chilled. The body has to expend energy to warm the f
by xsmasher 5y ago
>Drinking water appears to stimulate thermogenesis, or heat production, in the body, particularly when it's chilled. The body has to expend energy to warm the fluid to body temperature, and the more energy expended by your body, the faster your metabolism
We did the math on the "ice cube diet" in high school physics; the energy required to melt the ice was only a few calories. Not the Kilocalories listed on food labels- actual calories 1/1000th of that unit.
If there's an effect here, it's not from heating the water.
- BB212 5y agoAgree. The article lists appetite repression and I think its 100% that. When I diet/track calories I def load up on water to help. And for me - it does work very well.
- TheFreim 5y agoYup, that's it. Every time you get hungry drink a tall (TALL!) glass of water and usually the hunger goes away and you end up being content with an appropriate amount of food.
- matwood 5y agoI wonder if light dehydration can mask itself as hunger? The body wants something, unsure what, many people eat.
- jsemrau 5y agoDehydration can cause sugar cravings.
- x3n0ph3n3 5y agoYou're not just melting ice, but actually bringing it up to body temperature. 1 cubic inch is 2.54 * 2.54 * 2.54 = 16.4 cc = 16.4 grams. 1 F = 5/9 C. The heat capacity of water is 1 cal/gm.C. So the number of calories is 16.4 * 5/9= 9.1 9.1 cal / F / cubic inch * ( 98 F - 34 F) = 582 cal / cubic inch Edit: Yes, I realize 1 Cal = 1000 cal, I just wanted to clarify the math.
- albertgoeswoof 5y agoYour body is already at body temperature, and it’s at least 1000x the mass of the water, so the amount of energy required to move it to body temp is tiny, relatively speaking
- 988747 5y ago> at least 1000x the mass of the water Minor nitpick but: Typical glass of water weights 250g, but typical (even obese) human weight is very far from 250kg :) Guess you put one too many zero.
- codetrotter 5y agoBut they were talking about an ice cube, not a glass of water
- delecti 5y agoYou're right that that's significantly more than just a few, but it's still actual calories, not food calories.
- Raidion 5y agoSo your math is right (I think), but the calories in food are kilocals (capital C Calories). So it's .5 Cal /cubic inch.
- xsmasher 5y agoSo 0.5 dietary calories? You're better off doing one jumping jack.
- richthegeek 5y agoPlus the energy to melt the ice, 0.016kg * 334kJ/kg = 5334J = 1274 cal. A grand total of 1.8kcal per ice cube. Only 1000 ice cubes and you could eat twice as much as usual! At around 16 liters of water once melted that would be an interesting Darwin Award for sure.
- mixedmath 5y ago
- watwut 5y agoCalories are estimation - we guess how food is consumed and gave reasonable amount of measurements for it.
- fargo 5y agoThat's actually part of the definition of a calorie: "The modern (small) calorie is defined as the amount of energy needed to increase the temperature of 1 gram of water by 1 °C"
- EvanAnderson 5y agoI did almost the same thing in high school physics. I felt like I'd discovered magic weight loss secrets until I took into account that food is listed in kilocalories. Then we calculated how much liquid nitrogen you'd have to drink to offset a 2000 kcal basal metabolic rate. The volume wasn't shocking-- under 10 L, if I remember correctly. We decided it wouldn't be a very healthy diet, though.