What percentage range defines the cardiovascular health training zone?

The correct choice is the percentage range of 60-85%, which defines the cardiovascular health training zone. This zone is crucial for improving cardiovascular endurance and overall fitness. Training within this percentage range ensures that the heart and lungs are effectively challenged, which is essential for enhancing aerobic capacity and stamina. This intensity allows individuals to engage in activities that improve heart health, increase circulation, and enhance the body's ability to use oxygen efficiently.

Exercising within this range can lead to several health benefits, including improved heart function, weight management, and reduced risk of chronic diseases, as the body works optimally to sustain prolonged physical activity. It is important to understand that training at lower intensities, while beneficial for recovery and some aspects of fitness, does not typically yield the same cardiovascular adaptations that occur at moderate to vigorous levels of exertion found within the 60-85% range. Thus, for individuals targeting cardiovascular improvements, training at this intensity is particularly effective.