It is true that when you participate in a cardio-respiratory activity, you want your heart rate to stay elevated over an extended period of time.
Cardiorespiratory endurance is a physical activity that measures how well the heart, lungs, and muscles perform during moderate to high-intensity physical activity.
Cardiorespiratory fitness can be improved by conducting series of physical exercises like aerobic exercise.
Therefore, it is true that when you participate in a cardio-respiratory activity, you want your heart rate to stay elevated over an extended period of time.
Learn more about cardio-respiratory endurance at: https://brainly.com/question/1194142