Calories are units of calories, which can measure the nutritional energy of food and the energy released by the body, so as to maintain the nutritional balance of the body and avoid malnutrition or obesity.
The greater the moisture content in food, the lower the calorie value. Conversely, the more dry goods, the higher the calorie value. For example, compared with different vegetables, vegetables with high moisture content have the lowest calories, such as wax gourd, cucumber and lettuce.