Normal heartbeat

The normal heartbeat has a frequency per minute that the heart should have.

Normal pulse rate for adults and children

A heart rate of 60-100 bpm is considered normal, but there are a few exceptions.

A well-trained athlete can have a heart rate of 40 bpm, in an infant the heartbeat can be around 180-190 bpm.
The low pulsation can be considered acceptable if it indicates cardiovascular fitness and correct heart function.
Falling below the normal limit can be a cause for concern.
If the frequency drops below the norm, this is called bradycardia, while in the case of an accelerated heartbeat one speaks of tachycardia.