How many heartbeats are allotted to you?
In 2013, a group of Danish researchers published an article in BMJ Heart magazine with the results of a 16-year study of the health of 5, 200 people. Physiological data from 2800 of them were detailed enough to draw conclusions. Of these two thousand eight hundred people, a third did not live to see the completion of the study.
Scientists divided the study participants into groups depending on the pulse at rest and found a correlation between this indicator and life expectancy. The more often the pulse is at rest, the higher the risk of dying young, the researchers concluded. If the heart contracts 71-8 times per minute, his chance to stop is 51% higher than that of a heart that beats at a frequency of less than 50 times per minute. With a pulse from 81 to 90, the risk is twice as high, for 90 - three times, even if the other physiological parameters are cholesterol, sugar,
Life expectancy depends on the heart rate not only in a person, but in general for everyone who has a heart. Here on this site the heart rate of different animals is graphically compared; you can compare yourself with a whale (6 beats per minute) or a hamster (450 beats per minute). The average person lives about 70 years, the average human pulse is 60–70, multiplying, we get about 2 billion heartbeats.
The heart of the chicken beats often - 275 beats per minute, and she lives only 15 years, which gives the same 2 billion contractions of the heart muscle. But whales are allotted almost half the number of heartbeats: despite a very leisurely heart, they live a little longer than people. The same arithmetic with elephants: 70 years of life, the pulse - about 30. We, apparently, were lucky. The heart of a small hamster (450 beats per minute) is also designed for only a billion contractions, they last for three years of its short life.