The calorie gap is the difference between the calories consumed and the calories consumed by the human body in a day, for example, if the calories consumed in a day are 2000cal and the calories consumed are 1500cal, the calories consumed minus the calories consumed are equal to 500cal, which is the calorie gap of 500cal. Weight loss is to create a calorie gap, so that the calories consumed are higher than the calories consumed, and promote the body’s energy-supplying substances to replenish the gap, thus consuming the energy-supplying substances in the body to achieve the purpose of reducing body weight. Normal calorie consumption includes four ways: basal metabolism, daily activities, exercise and food heat effect; basal metabolism refers to the calorie consumption to maintain the minimum energy requirement of life in a day; daily activities refer to the daily consumption of non-exercise forms, such as walking, thinking, going up the stairs, etc.; exercise refers to the daily consumption of some form of conscious exercise, such as resistance exercise, aerobic exercise, etc.; food heat effect refers to the consumption of calories consumed by food processes. Basal metabolism, daily activity, and food thermic effect usually change less, and can generally only be increased by exercise to increase caloric expenditure. Although controlling intake can also lead to weight loss, it is important to note that reducing caloric intake is not the same as dieting. Dieting can certainly reduce caloric intake, but it also reduces the intake of nutrients, which can affect your health. Therefore, it is recommended that when controlling calorie intake, you can choose to eat highly nutritious, low-calorie foods to maintain a balanced nutrition.