What is the maximum heart rate of a 24-year-old male?

Digifit, a website dedicated to monitoring health metrics, offers a calculation that suggests that the maximum heart rate for an average 24-year-old male is 187 beats per minute. At this rate, the heart beats at 100 percent of its capacity.

The American Heart Association provides a chart that states that the average maximum heart rate for those who are 20 to 29 years old is 200 beats per minute. However, the association recommends that heart rates stay between a targeted heart rate zone, which is 50 to 85 percent, or 100 to 170 beats per minute. If the heart rate rises above this targeted zone, then the heart is undergoing too much strain.