Why does the pulse vary between people??

Answer 1

Our pulse is determined by 2 things. One, the heart on its own is a pace maker, meaning the SA node based on the DNA of its cells will send impulses at the pace it decides. Even if the heart is completely separated from the body, if it has nutrients (for ATP), it will continue to send impulses.

But just as important is the autonomic nervous system (sympathetic and parasympathetic). The sympathetic nervous system will increase heartrate, the parasympathetic nervous system will decrease heartrate, and these work in conjunction.

It should be noted that at normal, resting state, the heart is under parasympathetic regulation, meaning heartrate is a bit slower than the "intrinsic rate" of the SA node. So here are three possible places for heartrates to vary among people.

Answer 2

I have been a cardiac monitor technician (my job was to watch patients' heart rhythms on a screen). Approximately 70 beats per minute is a normal resting heart rate (pulse); that rate varies for many reasons such as exercise, illness, age, arrhythmias. So, 70 is just a base average. In someone at rest, a rate of over 100 (tachycardia) is reason for concern or medical or surgical (e.g., a pacemaker) intervention as is a rate below 60 (bradycardia). I hope that this information is helpful to you.

Answer 3

The pulse is directly related to how fast the heart is beating, some people have naturally slower heart rates than others it just depends on their body physiology

Answer 4

main reason is that it has to do with a how fast the heart is beating to pump blood though the body. If a person is fit it takes less because there is less in it way. it also has to do with your DNA and your family rates because part of it is inherited