Cardio sessions refer to workouts that elevate your heart rate and improve cardiovascular fitness. These sessions can include activities like running, cycling, swimming, or using machines such as treadmills and ellipticals. The goal is to enhance heart and lung function, increase endurance, and burn calories. Typically lasting from 20 to 60 minutes, cardio sessions can be performed at various intensities, from moderate to vigorous. They are often recommended for overall health and can be tailored to individual fitness levels. Regular cardio exercise can help reduce the risk of chronic diseases and improve mental well-being.