In the heart rate training system, what does the "Orange" zone represent?

The "Orange" zone in the heart rate training system represents a heart rate range of 84-91% of maximum heart rate. This zone is crucial because it indicates the threshold where individuals can achieve significant improvements in cardiovascular endurance and calorie burn. Training in the Orange zone helps to elevate metabolism and enhance the body's ability to recover from high-intensity efforts. It is where the body starts to experience anaerobic exercise, which means the body is working at a level that is intense enough to improve both aerobic and anaerobic fitness levels. Additionally, spending time in this zone can help create the "afterburn" effect, where the body continues to burn calories post-exercise, contributing to overall fitness and weight management goals.

The other heart rate zones have different ranges and serve distinct purposes in the training regimen, focusing either on lighter efforts that promote endurance or maximal efforts that improve speed and power, but the Orange zone specifically targets an area that optimizes performance and health benefits during workouts.