A cardio workout is a type of exercise that raises your heart rate and improves cardiovascular health. Common forms include running, cycling, swimming, and dancing. These activities help strengthen the heart, lungs, and blood vessels, making it easier for the body to deliver oxygen to muscles during physical activity. Engaging in regular cardio workouts can lead to various health benefits, such as weight loss, increased stamina, and reduced risk of chronic diseases like heart disease and diabetes. It is recommended to aim for at least 150 minutes of moderate-intensity cardio each week for optimal health.