Cardiovascular fitness refers to the ability of the heart, lungs, and blood vessels to supply oxygen to the muscles during sustained physical activity. It is an important aspect of overall health and is often measured through activities like running, cycling, or swimming. Good cardiovascular fitness can improve endurance, reduce the risk of chronic diseases, and enhance overall well-being. To improve cardiovascular fitness, individuals can engage in aerobic exercises, which include activities such as walking, jogging, dancing, and playing sports. Regular participation in these activities strengthens the heart and lungs, allowing the body to work more efficiently. Maintaining a consistent exercise routine is key to achieving and sustaining cardiovascular health.