1000 calories is equivalent to about 6 taels of food. Each serving of food has approximately 90 kcal of energy. The energy of 90 kcal includes about half a tael of food, which is 25 grams, such as a piece of bread, half a fist-sized bun or rice. Vegetables are 500 grams, which is one pound of vegetables; milk is about 130ml; eggs are one, about 50 grams; meat is about 50 grams, which is one or two pieces of meat.

Kaloric algorithm of food

The formula for calculating calories is: Male: [665 + 1, 38 x weight (kg) + 5 x height (cm) - 6, 8 x age ] x activity level; women: [665 + 9, 6 x body weight (kg) + l. 9 x height (cm) - 4, 7 x age] x activity level. (The average person's activity level is 1, 1 - 1, 3, sitting still is generally 1, 1, and the amount of activity is 1, 3.) Carbohydrates, proteins, and fats in food can provide energy for the human body. 1g of carbohydrates = 4 Calories, 1g protein = 4 calories, 1g fat = 9 calories.