Bøker av Rosa Wilson

A calorie is a unit of energy obtained from the food and drink we consume that allows us to perform daily tasks, such as physical activity, digestion, thinking, breathing, and maintaining organ function. All types of macronutrients (protein, carbohydrates, and fat) are sources of calories. The only difference between them is the number of calories they contain. Protein and carbohydrates offer four calories per gram, while fat provides nine calories per gram. Understanding your estimated calorie needs plays an important role in helping you to lose and maintain weight.