The calories consumed by adults every day = the basic metabolism of human body+the calories consumed by physical activity+the calories needed to digest food. Calories are units of energy. According to the general rough data, about 100 calories can be burned every jogging 1.6 km; 100 grams of corn is about 105 calories, and so on. 1000 calories = 1 kcal, and what we usually say verbally "how many cards have you consumed today" generally refers to "kcal".
Extended data:
Controlling energy intake and proper exercise are very effective ways to lose weight, and most doctors think it is the healthiest way to lose weight. This mechanism is very simple. When the daily energy intake is not enough to provide the energy consumed by the body, the body will call the sugar and fat stored in it. When fat is broken down and provides energy for the body, the process of losing weight begins.
However, it should be noted that excessive dieting will do harm to the stomach and digestive system. Some doctors pointed out that the control of energy intake should be gradual to ensure that the human body can adapt slowly, and the energy intake per day is generally not less than 800 calories.
Otherwise, the human body will make up for the lack of energy intake by reducing the body function, which usually leads to dizziness and fatigue, and the reduction of basal metabolic consumption will also affect the efficiency of weight loss.