The relationship between metabolic rate and body composition is crucial for understanding energy balance and weight management. A higher metabolic rate indicates that the body burns calories more efficiently, often associated with a greater proportion of lean muscle mass. Lean tissues require more energy to maintain than fat tissues, influencing how effectively the body uses calories. Individuals with higher muscle mass typically experience more significant weight loss during caloric restriction and maintain a healthier weight more easily. Thus, improving body composition can enhance metabolic activity and overall health.