Final answer:
Vigorous exercise provides a challenge to the cardiorespiratory system by increasing heart rate and improving cardiovascular endurance.
Step-by-step explanation:
Vigorous exercise should provide a significant challenge to your cardiorespiratory system. During exercise, your heart rate increases to pump more oxygenated blood to the working muscles. This helps improve your cardiovascular endurance and strengthens your heart and lungs. For example, activities like running, swimming, or cycling can be considered vigorous exercises that work your cardiovascular system.
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