Which nutrient should supply most of your calories and how much?

Carbohydrates should supply the majority of your calories, typically making up about 45-65% of your total daily caloric intake. They are the body's primary energy source, fueling both physical activity and brain function. It's important to focus on complex carbohydrates, such as whole grains, fruits, and vegetables, for optimal health. Balancing carbohydrate intake with proteins and fats is also essential for a well-rounded diet.