Energy balance is a concept used in the field of nutrition and metabolism to describe the relationship between the energy intake (calories consumed) and energy expenditure (calories burned) by an individual. When energy intake matches energy expenditure, an individual is said to be in energy balance. This balance is important for maintaining a healthy weight and overall well-being. When energy intake exceeds energy expenditure, a person is in positive energy balance, leading to weight gain. Conversely, when energy expenditure exceeds energy intake, a person is in negative energy balance, resulting in weight loss. Understanding and managing energy balance is crucial for managing weight, preventing obesity, and promoting overall health and wellness.