All about your heart rate

Maximum heart rate refers to the upper limit of what a person’s cardiovascular system can handle during exercise. It can be estimated by subtracting the person’s age from 220. Target heart rates (which range from 64% to 93% of the maximum) can help people know if they are doing moderate or vigorous exercise. Physical activity guidelines recommend that people get at least 150 minutes of moderate-intensity exercise or 75 minutes of vigorous-intensity exercise, or a combination of both, per week.