Aerobic fitness and muscular strength are two distinct aspects of physical health. Aerobic fitness, also known as cardiovascular endurance, refers to the body’s ability to utilize oxygen during prolonged physical activity, enhancing stamina and overall health. Exercises such as running and cycling predominantly build this fitness. In contrast, muscular strength is the maximum amount of force a muscle can produce, often developed through resistance training exercises like weightlifting. Both forms of fitness are crucial; aerobic fitness supports heart health, while muscular strength enhances daily functioning and injury prevention.