What is the target heart rate zone for aerobic exercise?

The target heart rate zone for aerobic exercise is typically established to ensure that individuals are working at a level of intensity that is effective for improving cardiovascular fitness and overall health. The correct range of 50% to 85% of maximum heart rate is recommended because it corresponds to a level of exertion that balances intensity and sustainability.

This zone allows for safe and effective training where the heart and lungs can strengthen, enhancing overall endurance and aerobic capacity. Exercising within this range helps to optimize fat-burning and improves cardiovascular health by providing enough challenge to induce adaptations in the body's systems without risking injury or overexertion.

While lower percentages, such as those found in other options, may be suitable for beginners or for ease of recovery, they do not provide the same level of cardiovascular benefit as the 50% to 85% range. On the other side, exercising at a higher intensity, as represented in the other choices, may exceed safe limits for many individuals, particularly those who are untrained or have underlying health conditions, making it less appropriate for the general population.