Source: Cooper Institute
Frequency, duration and intensity of your exercise all factor into the effectiveness of your workout program. While you can easily track frequency and duration, determining the intensity of your workout is more challenging, which is where heart rate tracking comes into play.
Heart rate provides an objective measurement of how hard your body is working. The higher the exercise intensity, the higher your heart rate will be. Cooper Fitness Center Professional Fitness Trainer Ryan Sheppard explains heart rate monitoring and how it relates to fitness performance.