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One gram of protein has 4 grams of calories. By definition of a calorie, it is a unit of heat that determines the amount of energy that foods will produce in the human body. (In 1824, Nicolas Clement discovered that a calorie was a unit of heat)

In a dictionary, a calorie would be defined as "approximates the energy needed to increase the temperature of 1 gram of waterby 1 °C. This is about 4.2 joules."- wikipedia. This is the general definition of a calorie that you would also find in Biology textbooks.

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12y ago
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14y ago

I would think it would be somewhere around two thousand MAYBE I know you can find better sites than this one that have good answers too like,

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14y ago

well this depends if you are a girl i would say around 2000-3000 calories a day and if you are a boy i would say 4500-600 a day then work out later on in the day

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11y ago

2-3000

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Q: How much calories should a preteen girl have a day?
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Related questions

How much exercise should a preteen girl get?

as much as she needs, so that she is not fat


How much calories should a 13 year old girl eat daily?

It depends on the height and weight of the girl. But an average 13 year old girl should get between 1,500 to 2,500 calories a day.


How much calories should girl that weights 122 eat?

It depends on age, but about 1800-2000.


How many calories should a 14-year-old girl consume daily if she is 5 feet 3 inch?

She should take about 1400 calories depending how much she excersises


How much should a preteen weigh?

Between 80/85 - 110/120 .


How many calories should an 11 year old girl eat a day?

An 11-year-old girl who leads a sedentary life is advised to consume approximately 1,600 calories per day. A much more active 11-year-old girl should consume 2,200 calories daily. An inactive boy of the same age should consume about 1,800 calories per day, while an active 11-year-old boy should consume 2,600 calories per day.


How many calories should a 15 year old 5'3 girl with not much activity have a day?

Depends on activity levels,


How much calories should a 10 year old girl eat a day?

anywhere from 1500-2400 depending on her size.


How many calories should a girl that weighs 110lb is 5.4 in and exercises an hour or two a day?

Depending on the severity of the exercise, and the age of said girl, between 1300 and 1700 calories a day. Much more and weight will likely be gained. Much less and weight will be lost.


How much should a ten year old girl eat in one day?

at least 1000.21 calories a day to keep healthy


How much calories should a 82 pound 5'3 14 year old girl take in a day?

omg; are u serious? your 82lbs; quit worryin and take in as many calories as you want.


Is 8000 calories too much for a young girl?

yes