Metabolism is significantly influenced by muscle mass, as muscle tissue requires more energy to maintain than fat tissue does. Individuals with a higher proportion of muscle mass generally have a higher resting metabolic rate (RMR), which means they burn more calories even at rest. This increased calorie expenditure can facilitate weight management and support overall health. Additionally, engaging in strength training can help build muscle mass, further enhancing metabolic efficiency. Therefore, maintaining or increasing muscle mass through physical activity is crucial for effective metabolism and energy balance.