What are the advantages in implementing the HRR formula to measure exercise intensity for a person who exercis

Question

what about HR max formula for a person that is a beginner?

Answer 1

Changes in CR fitness are directly related to how hard an aerobic exercise is performed. The more energy expended per unit of time, the greater the intensity of the exercise. Significant changes in CR fitness are brought about by sustaining training heart rates in the range of 60 to 90 percent of the heart rate reserve (HRR). Intensities of less than 60 percent HRR are generally inadequate to produce a training effect, and those that exceed 90 percent HRR can be dangerous.

HR Max requires knowledge of age and general health.