What is it called when one eats the same number of calories as those used daily through physical activity?

The concept being described is known as energy balance. This term refers to a state where the number of calories consumed through food and drink is equal to the number of calories expended through metabolic processes and physical activity. When an individual maintains energy balance, their body weight remains stable, as they are neither gaining nor losing energy.

In contrast, a caloric surplus occurs when calorie intake exceeds what is burned, leading to weight gain, while an energy deficiency or caloric deficit happens when calorie expenditure surpasses intake, resulting in weight loss. Energy balance is essential for maintaining overall health, as it supports bodily functions and daily activities. Understanding this concept is vital for individuals looking to manage their weight or nutritional intake effectively.