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The relationship between fat burning and water??
- Thread starter thelegacy
- Start date
Without adequate hydration the endocrine system will not function optimally (not to mention every aspect of the human body will not function at maximum capacity) But as far as 4%...my guess would be that not being properly hydrated could affect it alot more than 4%.
hhajdo
New member
Question
When I drink ice water, does my body burn calories warming up the ice?
Answer
For anyone trying to lose weight, this question is an exciting one! If you simply want to know if your body burns calories warming up the water, the answer is yes. But if you want to know if drinking a lot of ice water can help you lose weight, or keep weight off, this "yes" needs to be qualified with some calculations.
First of all, calories are case-sensitive. There are calories and then there are Calories. Calories with a big "c" are the ones used to describe the amount of energy contained in foods. A calorie with a little "c" is defined as the amount of energy it takes to raise the temperature of 1 gram of water 1 degree Celsius. What most people think of as a Calorie is actually a kilo-calorie: It takes one Calorie to raise the temperature of 1 kilogram of water 1 degree Celsius. So when you drink a 140-Calorie can of cola, you are ingesting 140,000 calories. There is no cause for alarm, because the conversion applies across the board. When you burn 100 Calories jogging a mile, you are burning 100,000 calories.
So, considering that the definition of a calorie is based on raising the temperature of water, it is safe to say that your body burns calories when it has to raise the temperature of ice water to your body temperature. And unless your urine is coming out ice cold, your body must be raising the temperature of the water. So calories are being burned.
Let's figure out exactly what you're burning when you drink a 16-ounce (0.5 liter) glass of ice water:
The temperature of ice water can be estimated at zero degrees Celsius.
Body temperature can be estimated at 37 degrees Celsius.
It takes 1 calorie to raise 1 gram (0.0352 ounces) of water 1 degree Celsius.
There are 454.56 grams in 16 ounces of water.
So in the case of a 16-ounce glass of ice water, your body must raise the temperature of 454.56 grams of water from zero to 37 degrees C. In doing so, your body burns 16,819 calories. But that's calories with a little "c." Your body only burns 17 Calories, and in the grand scheme of a 2,000-Calorie diet, that 17 isn't very significant.
But let's say you adhere to the "eight 8-ounce glasses of water a day" nutritional recommendation. In 64 ounces of water, there are 1,818.24 grams. So to warm up all that water, in the course of a day, your body burns 67,275 calories, or 67 Calories. And over time, that 67 Calories a day adds up. So, while you definitely shouldn't depend on ice water consumption to replace exercise or a healthy diet, drinking cold water instead of warm water does, in fact, burn some extra Calories!
When I drink ice water, does my body burn calories warming up the ice?
Answer
For anyone trying to lose weight, this question is an exciting one! If you simply want to know if your body burns calories warming up the water, the answer is yes. But if you want to know if drinking a lot of ice water can help you lose weight, or keep weight off, this "yes" needs to be qualified with some calculations.
First of all, calories are case-sensitive. There are calories and then there are Calories. Calories with a big "c" are the ones used to describe the amount of energy contained in foods. A calorie with a little "c" is defined as the amount of energy it takes to raise the temperature of 1 gram of water 1 degree Celsius. What most people think of as a Calorie is actually a kilo-calorie: It takes one Calorie to raise the temperature of 1 kilogram of water 1 degree Celsius. So when you drink a 140-Calorie can of cola, you are ingesting 140,000 calories. There is no cause for alarm, because the conversion applies across the board. When you burn 100 Calories jogging a mile, you are burning 100,000 calories.
So, considering that the definition of a calorie is based on raising the temperature of water, it is safe to say that your body burns calories when it has to raise the temperature of ice water to your body temperature. And unless your urine is coming out ice cold, your body must be raising the temperature of the water. So calories are being burned.
Let's figure out exactly what you're burning when you drink a 16-ounce (0.5 liter) glass of ice water:
The temperature of ice water can be estimated at zero degrees Celsius.
Body temperature can be estimated at 37 degrees Celsius.
It takes 1 calorie to raise 1 gram (0.0352 ounces) of water 1 degree Celsius.
There are 454.56 grams in 16 ounces of water.
So in the case of a 16-ounce glass of ice water, your body must raise the temperature of 454.56 grams of water from zero to 37 degrees C. In doing so, your body burns 16,819 calories. But that's calories with a little "c." Your body only burns 17 Calories, and in the grand scheme of a 2,000-Calorie diet, that 17 isn't very significant.
But let's say you adhere to the "eight 8-ounce glasses of water a day" nutritional recommendation. In 64 ounces of water, there are 1,818.24 grams. So to warm up all that water, in the course of a day, your body burns 67,275 calories, or 67 Calories. And over time, that 67 Calories a day adds up. So, while you definitely shouldn't depend on ice water consumption to replace exercise or a healthy diet, drinking cold water instead of warm water does, in fact, burn some extra Calories!
Since I am walking out the door right now I'll just throw out a quick note...the body is made up of ~60-65% water. Gotta go... hhajdo will finish this I'm sure.
hhajdo
New member
thelegacy said:
Decreased water intake will lead to cell shrinking which will cause protein breakdown independent of hormone influence.
Cell swelling tells the cell to increase protein synthesis, thus promoting anabolism..
Here's a good article about water intake:
Water Intake
How much is enough?
By John M Berardi
First published at www.skifaster.net, 2001.
Adequate water is an important part of any athletic regimen but it is often neglected. How much water is needed is a controversial topic in the popular literature. Let's look to the science.
When looking at the research, there is a recent paper in the Journal of the American Dietetics Association (Volume 99, number 2, pages 200-206, 1999) that discusses water needs. In this paper, the author states that:
" To be well hydrated, the average sedentary adult man must consume at least 2,900 mL (12 c) fluid per day, and the average sedentary adult woman at least 2,200 mL (9 c) fluid per day, in the form of noncaffeinated, nonalcoholic beverages, soups, and foods. Solid foods contribute approximately 1,000 mL (4 c) water, with an additional 250 mL (1 c) coming from the water of oxidation."
The authors also state that "Dehydration of as little as 2% loss of body weight results in impaired physiological and performance responses."
So it appears that in sedentary individuals the equivalent of about 12 cups of water per day are necessary (4 cups come from food, 1 cup from metabolism, and 7 cups from fluid intake). In fact, a few correlational studies have shown that individuals consuming this amount of water per day are less likely to suffer from:
urinary stone disease
breast cancer
colon cancer
urinary tract cancer
childhood and adolescent obesity
mitral valve prolapse
salivary gland disorders
So for sedentary individuals, you should shoot for about 7 cups of water per day if consuming near your calorie needs.
As far as athletes, there is good research showing that dehydration seriously impairs mood, intensity, strength, and endurance. Although there is very little research looking at how much fluid is needed to prevent dehydration in athletes, the Guyton Textbook of Medical Physiology the following table showing the amount of water lost in the average 70kg athlete (154lb) in different exercise and non-exercise conditions:
Normal Weather -
No exercise
(68° F) Warm Weather -
No exercise
(85° F) Exercise in Warm
Weather (85° F)
Insensible Sweat Loss
- Skin 350 mL 350 mL 350 mL
- Respiratory Tract 250 mL 350 mL 650 mL
Urine 1400 mL 1200 mL 500 mL
Feces 100 mL 100 mL 100 mL
Sweat 100 mL 1400 mL 5000 mL
Total 2,300 mL (2.3L) 3,300 mL (3.3L) 6,600 mL (6.6L)
From this table it appears that although athletes will be getting more water from foods and will be making more "metabolic water" due to cellular metabolism, this probably is not enough water to support the higher levels of muscle mass, metabolic activity, and the higher sweating rates of more active people. Especially in warm weather climates. So more water may be necessary.
Since the first study I mentioned study proposed the idea that about 3L (12 cups) of water per day might be necessary for adequate hydration in sedentary individuals and that about 1.25L (5 cups) come from food and as a byproduct of metabolism, that means that 1.75L (7 cups) should be consumed per day.
Assuming that athletes are eating more food than the average person eats and that they have a higher metabolic rate, they might be getting about 2L (8 cups) per day from food and metabolism. Their water needs on training days, however are probably higher so drinking 2 additional liters (8 cups) of water per day might get the job done if they don't live in warm weather climates. If living in warm weather climates, drinking an additional 4 liters (16 cups) might be necessary on training days. Base your water intake on your climate, sweat rates, and your activity levels. Remember the above examples are based on a 70kg athlete. If you're bigger, you may need more.
Bottom line: on non-training days, it appears that ½ gallon of additional water is adequate in both warm and "normal" climates. On training days, however, you may require a gallon or more water per day to stay adequately hydrated.
