Calorie reduction refers to the practice of consuming fewer calories than the body needs for maintenance and energy. This approach is often used for weight loss, as it creates a calorie deficit, prompting the body to use stored fat for energy. It can be achieved by eating smaller portions, choosing lower-calorie foods, or increasing physical activity. Many people adopt calorie reduction as part of a balanced diet, which may include foods rich in nutrients while being lower in calories. Popular methods include tracking daily intake or following specific diets, such as Mediterranean diet or intermittent fasting, to help manage calorie consumption effectively.