Cardiovascular endurance refers to the ability of the heart, lungs, and muscles to perform prolonged, moderate to high-intensity exercise. It is a critical aspect of overall fitness, impacting how efficiently the body utilizes oxygen during physical activity. Improved cardiovascular endurance enhances overall stamina, reduces fatigue, and promotes better daily performance in various tasks. It can be developed through activities such as running, cycling, swimming, and group fitness classes, benefiting overall health.