The Science of Calorie Counting
A calorie is a unit of energy. In nutrition, calories refer to the energy people get from the food and drink they consume, and the energy they use in physical activity. Understanding your Total Daily Energy Expenditure (TDEE) is the first step toward achieving your weight goals—whether that is losing weight, gaining muscle, or maintaining your current physique.
[Image of energy balance equation]Why Activity Level Matters
Even if you are at rest, your body requires energy for basic functions like breathing and circulation. This is known as your Basal Metabolic Rate (BMR). However, your total daily needs are determined by adding your physical activity to your BMR. Using an accurate multiplier ensures that you aren't under-eating or over-eating based on your lifestyle.