Heart rate: A normal person's heart rate should be between 60- 100 beats per minute.
But the heartbeat times of different ages are different. The heart rate of the elderly over 60 years old can be slowed down, but the slowest can not be less than 50 beats per minute. The cardiac output of athletes or strong manual workers is obviously higher than that of normal people.
Fever, emotional excitement, nervousness, intimidation, etc. There can be a one-time increase in the number of heartbeats, which is a reflection of the normal adjustment of the body. In short, the speed of heartbeat can reflect a person's own heart function. A strong, regular and coordinated heartbeat is one of the signs of good heart function.
When adults are quiet, their heartbeat exceeds 100 times per minute, which is medically considered as "tachycardia"; Less than 60 times is "bradycardia".
However, like many organs of the body, the working ability of the heart can be changed, and it has a lot of room for expansion and contraction.
According to research, if you finish a set of broadcast gymnastics seriously, your heart rate may increase by twenty or thirty times per minute. When people are angry and afraid, when students are in the examination room, their heart beats faster. The heart rate of athletes climbing Mount Everest is 170 to 80 beats per minute. Let some people run 300 meters with a load of 30 kilograms, and their hearts beat more than 200 times per minute. Medical data recorded a heartbeat as high as 270 times.
The purpose of quickening the heartbeat is to send more blood to meet the needs of manual labor, sports and special circumstances. If the heartbeat is too small, the blood supply is insufficient, and the body cannot get the necessary oxygen and nutrition, people