Cardiovascular machines are fitness equipment designed to improve heart and lung health through aerobic exercise. Common types include treadmills, ellipticals, and stationary bikes. These machines help users engage in activities that elevate their heart rate, promoting better circulation and endurance. Using cardiovascular machines can aid in weight management and overall fitness. They often come with adjustable settings to accommodate different fitness levels, making them suitable for beginners and advanced users alike. Regular use can lead to improved cardiovascular health, increased stamina, and enhanced mood through the release of endorphins.