We often say that the normal heart rate is between 60-90, but this is the average, which means that this heart rate level applies to most normal people, but for some patients of advanced age and heart-like diseases, this standard is a bit high, not to mention the 90 heart rate, 80 heart rate is very dangerous. People with high age need to have a lower heart rate! Heart rate is actually the speed of the heart beating, we often say that young people have vitality, referring to the heart, because with the growth of age, the heart function will gradually decline, the heart rate will also be reduced, this reduction in heart rate is normal, and even in a sense is good, because there are studies show that “the slower the heart rate, the longer life”. This is because after a certain age, the risk of death from cardiovascular disease is much higher in people with a fast heart rate than in people with a slow heart rate. For people of advanced age alone, it is best to keep the heart rate between 60-70, and if there is no other discomfort it can be slower. People with coronary artery disease need to have a lower heart rate! The mechanism of coronary heart disease should not be unfamiliar to everyone, I will briefly explain: mainly because of insufficient blood supply to the heart muscle can not meet the consumption, resulting in an imbalance between supply and demand, and then angina, if more serious is a heart attack. The supply of blood oxygen will be consumed by the heart continuously, the external expression of this consumption is the beating of the heart, more reflected in the heart rate, can we understand that “the faster the heart rate, the faster the heart beating, the more oxygen consumed at this time”, when the consumption is much higher than the blood transported by the blood vessels, it will be dangerous. It will be dangerous, so for patients with coronary heart disease, it is necessary to ensure that the heart rate is too low. Although the trend of cardiovascular diseases is obvious, the main force of these diseases is still the middle-aged and old people, and most of the patients meet the dual conditions of advanced age and cardiovascular diseases, so their heart rate requirements should be more strict, otherwise danger is likely to occur. In summary, for patients with advanced coronary heart disease (as well as cardiovascular diseases such as heart attack and heart failure), 55-60 is the safest heart rate range, which also has the best prognosis for the patient.