In the Karvonen Formula, what does HRR represent?

In the Karvonen Formula, HRR stands for Heart Rate Reserve. This is a crucial component in calculating the target heart rate for aerobic exercise. Heart Rate Reserve is determined by subtracting the resting heart rate from the maximum heart rate. This reserve reflects the range of heart rates that a person can utilize during exercise to ensure that they are training efficiently within their aerobic capacity. The formula allows fitness professionals and individuals to establish an appropriate exercise intensity tailored to their cardiovascular conditioning and goals. By understanding HRR, trainers and clients can create training programs that optimize cardiovascular endurance and fat burning while minimizing the risk of overtraining.