Interval between them varies with whatever is in question as the smaller something is, the faster it beats.
1 second
Rest? Our hearts never rest.
11.57 days, but no ones heart is that constant.
The heart muscle cannot take a little rest.they cant take a rest even in a few minutes because if they will rest we will die.
That is the great question! The heart muscle is designed to pump the blood. It takes some time to fill the heart chamber. It can not be done instantly. So the refractive time can be kept long. If it is short the heart may contract frequently with out any out put. Second reason is even more important. The heart can not take a holiday. That means the heart has to work continuously. So it has to take rest after every beat. So that it can work for life long. It's work not stop till you die. Because you die when it takes rest for five minutes.
A fit person in good health at rest less than once a second Top Athletes commonly get over 3 per second If that happened to me My heart would just quit.
Take a stethoscope and place it on your heart.
In a heart beat
Your heart beats through out your life time. It does not stop for a minute. Nature has created very beautiful mechanism for heart to do so. Your heart take rest for some time during each beat. When your atria contracts the ventricles are taking rest and vise verse. They get rest for some additional time and the miracle continues. Heart muscle has got inherent tendency to beat rhythmically. The sinus node beats faster than other cells and decides the pace.
this is the normal heart beat and because of this we take those amount of blood which need us
Within a single heart beat.
because then you will die
When the SA node in your heart stops functioning properly, then you have to receive a pacemaker, which will take the place of the SA node and set your heart beat for you.