What is the significance of muscle mass in relation to metabolism?

Muscle mass plays a crucial role in metabolism, particularly in relation to the basal metabolic rate (BMR). BMR is the number of calories that the body requires to maintain essential physiological functions while at rest, such as breathing, circulation, and cell production.

Having more muscle mass is significant because it increases BMR. This occurs because muscle tissue is more metabolically active than fat tissue; it requires more energy to maintain and function. As a result, individuals with higher levels of muscle mass tend to burn more calories throughout the day, even when not exercising. This can aid in weight management and overall metabolic health.

In addition to influencing caloric expenditure, increased muscle mass can enhance overall strength and performance, which further contributes to metabolic health through increased activity levels and energy expenditure during both exercise and daily activities. This interplay between muscle development and metabolism highlights the importance of strength training and maintaining muscle mass, especially as one ages.