It is recommended that you exercise within 55 to 85 percent of your maximum heart rate for at least 20 to 30 minutes to get the best results from aerobic exercise. The MHR (roughly calculated as 220 minus your age) is the upper limit of what your cardiovascular system can handle during physical activity.
Knowing your target heart rate is an essential tool to monitoring your fitness goals. Learn how to understand your heart rate and which level you should be aiming for.
