1 kcal is one calorie, one calorie is equivalent to 1000 calories, and 1000 calories is equivalent to about 6 ounces of food.

Breakfast within 300 calories, a cup of 250 ml milk 150 calories, an egg 70 calories, and a piece of toast 60 calories.

Lunch within 600 calories, a bowl of rice 150 calories, a braised meat dish such as braised pork ribs 250 calories, a fried vegetable 80 calories, and a bowl of seaweed soup 40 calories.

Normal intake of calories

The daily calories needed by adults = the basic calories needed for basic metabolism of human body+the calories needed for physical activity+the calories needed for digesting food.

Calories required for digesting food = 10%x (minimum calories required for basic metabolism of human body+calories required for physical activity).

The daily calorie requirement of adults = 1. 1x (the minimum basic calorie required by basic metabolism of human body+the calorie required by physical activity).

Male, 9250- 10090 kj.

Female, 7980-8820 kilojoules.

Note that the daily heat provided by food should be not less than 5000 -7500 kilojoules, which is the least energy to maintain normal life activities of human body.