Cardiovascular exercise, often referred to as cardio, is any physical activity that raises your heart rate and improves the efficiency of your heart and lungs. Common forms of cardio include activities like running, cycling, swimming, and walking. Engaging in these exercises helps to strengthen the heart, increase blood circulation, and enhance overall endurance. Regular cardiovascular exercise is beneficial for maintaining a healthy weight, reducing the risk of chronic diseases, and improving mental health. It is recommended to aim for at least 150 minutes of moderate-intensity cardio each week to achieve optimal health benefits.