Exercises that improve cardiovascular fitness include activities such as running, swimming, and cycling. These aerobic exercises elevate heart rate, enhance oxygen uptake, and improve overall endurance. Interval training, which involves alternating periods of high-intensity effort with rest, can also be effective in boosting cardiovascular capacity. Incorporating a variety of these exercises into a routine helps maintain interest, challenges the body, and maximizes cardiovascular benefits, contributing to improved heart health and fitness levels.