1) Gauging exercise intensity - An excessive increase of heart rate can indicate that a workout may be too intense. On the other hand, a lack of decrease in heart rate from the baseline data can indicate that intensity can be increased. 2) Optimization of workouts - The level of increase and decrease of heart rate can reflect the tolerance of a person's exercise intensity, thus, it can effectively be used to measure fitness goals and effectivity of an exercise.3) Ensurance that a person is working at the right level - over and under training can be reflected in the uptake of heart rate. Avoiding over training is crucial for the long term fitness goal of a person.