What is the function of the containers in the 21 Day Fix diet program?

The containers in the 21 Day Fix diet program serve an important function for portion control and meal planning. Each container is a different size and color, corresponding to a specific food group—vegetables, fruits, proteins, carbohydrates, healthy fats, and seeds/dressings—to ensure that users consume the right amounts of each. By filling the containers with their designated foods and using them for all meals throughout the day, dieters can easily control their calorie intake without the need for complex calorie counting or meticulous tracking. This simple yet effective system promotes balanced eating by visually demonstrating proper portion sizes and encouraging a variety of nutrient-dense foods in one's diet.