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Your question is ambiguous, but I'll try to give you a few answers:
1) Measuring food calories is important because these calories relate to human or animal nutrition and health. If you are getting too few your body will not have enough energy to function. If you are getting too many your body will try to store the extra energy by creating fat, which is calorie-rich material. If you get calories in the wrong form for your metabolism, you may have too much energy and not enough other nutritional building blocks to use it; that might result in fat build-up or an upset metabolism.
2) Measuring external calories is important because energy is what runs machines. We usually don't measure machine energy in calories. We measure that in joules or kilowatt-hours. It's energy, nonetheless, and counting energy is important for both economic and ecological purposes.

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10y ago

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Related Questions

Is it really necessary to measure one's calories?

It is extremely important to measure one's calories if you are overweight or if you wish to loose weight and maintain it. If the body takes in too many calories and you do not exercise properly you will not be able to burn the extra calories.


How are calories important to your bodies?

Calories are only a measure of how much energy you can get from a nutrient or a food source. The more calories you get, the more energy you can burn. However if you burn less calories of what you ingest, you get stored fat. Calories are how we measure energy from foods for our body. When we get more calories than we burn, we store the extra in fat cells. This is how we gain weight. When we eat less calories than we burn, we use the extra calories tored in fat cells. This is how we lose weight.


Are a measure of how much energy you get from a serving of food?

Calories are a measure of the energy you get from a serving of food. The number of calories in a food item indicates how much energy your body can obtain by consuming it. It is important to balance calorie intake with physical activity to maintain overall health.


How does calories convert to lbs?

It does not. Calories are a measure of thermal energy whereas pounds are a measure of mass. The two measure different things and any attempt to convert from one to the other is seriously flawed.


What is 171 pounds minus 1045 calories?

Those are two different kinds of measurements and you cannot subtract calories from pounds. Pounds measure weight and calories measure energy.


What does calories mean in math?

"Calories" is not a mathematical concept. It is a measure of energy, in Physics.


What is calories and CALORIES?

Units to measure energy. Usually written kilojoule or kJ.


Definition of calories?

a measure of energy from food


What is the measure of the energy value of food?

calories


How many calories in Diet Lemonade?

Approx 50 calories for a 25ml measure of Malibu and assuming lemonade 0 calories


Is the calories per serving on a food label?

Carbohydrates, sugars, and vitamins


Can you burn calories faster than fat?

Calories are a measure of energy, fat contains energy (calories). Therefore your question is nonsense.