The normal range of heart rate for a 70-year-old is 60 to 100 beats per minute. Heart rate is the number of heart beats per minute. In a quiet, awake state, the normal adult heart rate ranges from 60 to 100 beats per minute. Older adults have the same measurements as normal adults, but some older adults have a slightly slower heart rate, which is also a normal physiological phenomenon. Heart rate can reflect the health of the heart. In adults, a heart rate greater than 100 beats per minute is called tachycardia, and less than 60 beats per minute is called bradycardia. Tachycardia or bradycardia can be associated with physiologic, pathologic, or pharmacologic factors, all of which can affect health. It is important to consult a physician for timely and targeted treatment under the guidance of the physician.