Aerobic exercise is a type of physical activity that involves using large muscle groups in a rhythmic and continuous manner. It is commonly referred to as "cardio" exercise because it primarily works the cardiovascular system, improving the body's ability to deliver oxygen to the muscles during physical activity. Examples of aerobic exercises include running, cycling, swimming, and dancing. Aerobic exercise has numerous health benefits, including improving heart health, boosting metabolism, and reducing the risk of chronic diseases such as obesity, diabetes, and cardiovascular disease. It is recommended that adults engage in at least 150 minutes of moderate-intensity aerobic exercise per week for optimal health benefits.