A pulse of 87 beats/minute is usually normal if the rhythm is regular, but it may not be normal if the rhythm is irregular or if the pulse is 87 beats/minute in an infant. The pulse and heart rate of a normal adult are in sync, usually 60-100 beats per minute, with more than 100 beats being considered tachycardia and less than 60 beats being considered bradycardia. Therefore, the pulse rate alone is generally normal. There are some differences in the pulse rates of different groups of people. The pulse rate of pregnant women is slightly faster, and it can increase by 10 to 15 beats per minute in late pregnancy. In infants, the pulse rate can be 120 to 140 beats/min, in toddlers it is about 90 to 100 beats/min, and in school-age children it is about 80 to 90 beats/min, but the latter two are both normalized at 60 to 100 beats/min. Therefore, if 87 beats/minute is present in an infant, consider a slower heart rate. If the rhythm is irregular, it suggests an arrhythmia, such as atrial fibrillation, premature atrial beats, premature ventricular beats, and so on, which are also abnormal. Pulse can be affected by a variety of factors, such as age, gender, mood, and illness. In addition, changes in pulse rate may also occur in physiological situations, such as strenuous exercise, change in body position, pregnancy, alcohol, tea and coffee consumption. If your pulse rate is abnormal, you should consult a medical professional and do not make any judgment on your own.