One gram of fat can produce 9 calories (37.56 kilojoules), and one kilogram of fat can produce 9000 calories. If you take a light manual worker or mental worker weighing 60 kilograms as an example;

You need to consume about 1800~2000 calories a day, and at most 14000 calories a week, which is equivalent to burning1555g (3kg) of fat. In other words, a mental worker or a light manual worker who doesn't eat for a week can only lose 3 pounds of fat at most when working.

Counting calories every day is not effective for losing weight, it all depends on the quality of food:

Unlike sugar and fat, calories are just the number of calories. Compared with the calories contained in food, nutritional quality is more important. For example, a cup of Coca-Cola provides the same amount of water and 8 tablespoons of sugar. And half a banana provides fiber, carbohydrates, potassium, magnesium and high-quality plant protein.

Counting calories only is dangerous and flawed, which can lead to eating disorders and sometimes anorexia or bulimia. Experts say that when we start counting calories, we lose the fun of eating and cut off the feeling of eating. Real dietotherapy should pay attention to the quality of food and exercise.

People's Daily Online-The fat limit is two kilograms per week.