The calorific value of food samples is defined as: when 1 ml (mass is 1 g) is heated, it takes 4. 1 87 joules for each increase in1degree Celsius.

1. Staple food: Take rice, porridge and noodles as examples. If 80 calories are taken as the calculation unit, the calories of a bowl of ordinary rice, half a bowl of porridge or half a bowl of noodles in daily life are equivalent to 80 calories.

2. Meat, tofu and eggs: 37 grams of lean meat and 20 grams of fat are 80 calories 125 grams of milk, and two teaspoons or half tablespoons of fat are 80 calories. It is worth noting that the calorie of boiled eggs is 80 calories, while the calorie of fried eggs is 120 calories.

3. Vegetables: 600 grams of any vegetable equals 80 calories.

4, seafood: 100 grams about 80 calories.

5. Fruit: 300 grams of watermelon and 80 calories of two oranges.

Extended data

On average, for every kilogram of weight gain, the calories required by human body will increase by 0. 1MJ. Generally speaking, an adult man needs about 9.25 to10900 joules every day; An adult woman needs about 7.98 to 8.82 million joules a day.

Pupils need about 9.25 million joules of heat every day on average, which is similar to the minimum heat required by an adult man. Middle school students are developing and need to consume more calories. Boys need 10.465 MJ on average every day, while girls need 10.046 MJ.

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