Increased muscle mass contributes to a higher resting metabolic rate. This means the body expends more energy even when at rest, leading to greater calorie expenditure and potentially more efficient fat utilization. For example, a pound of muscle may burn several more calories per day compared to a pound of fat. This difference, though seemingly small, can accumulate over time and contribute to noticeable changes in body composition.
Improved metabolic function and fat oxidation are significant advantages associated with greater muscle mass. These physiological changes can contribute to weight management, improved insulin sensitivity, and a reduced risk of metabolic disorders. Historically, exercise science has focused on aerobic activity for fat loss; however, more recent research emphasizes the important role of resistance training and muscle development in achieving optimal metabolic health.