Adults typically have a resting heart rate between 60 and 100 beats per minute. A lower resting heart rate typically indicates improved cardiovascular fitness and more effective cardiac function. (Source: healthline)
When a person is at rest (and awake), a heart rate below 60 beats per minute or beyond 100 beats per minute is frequently seen as dangerous, but it can be normal in other circumstances. (Source: forbes)
It is seen as concerning when an abnormally high or low heart rate persists for several hours or days. When it is accompanied by other symptoms, it might also be regarded as dangerous.
You may have bradycardia, a heart rate that is regularly lower than average if it occurs while you are awake and your heart rate is consistently less than 60 beats per minute.
Tachycardia, a condition characterized by a rapid heart rate, is labeled if your heart rate regularly registers above 100 beats per minute.
When symptoms like dizziness, blackouts, or collapse, as well as lowered or raised heart rates, are present, urgent medical assistance should be sought.