A normal heartbeat is defined as the consistent rhythm of the heart, which should beat between 60 and 100 times per minute. A heartbeat outside of this range can be indicative of certain conditions or diseases.

How is Heart Rate Measured?

Heart rate is measured by counting the number of beats over a certain period of time. The most common method is to place two fingers on the wrist or neck to feel the pulse, and count the number of beats in 15 seconds.

This number is then multiplied by four to get the heart rate in beats per minute.

Factors That Affect Heart Rate

There are many factors that can affect heart rate, including:.

Physical activity
Body temperature
Emotional state
Age
Medications
Health conditions

Normal Heart Rate Range

The normal range for heart rate varies based on age, health, and activity level. In general, the normal range for adults is between 60 and 100 beats per minute.

However, highly trained athletes may have a resting heart rate as low as 40 beats per minute, while newborns may have a heart rate as high as 160 beats per minute.

According to the American Heart Association, the normal range for heart rate by age is as follows:.

Newborns (0-3 months): 100-150 beats per minute
Infants (3-6 months): 90-120 beats per minute
Babies (6-12 months): 80-120 beats per minute
Toddlers (1-3 years): 80-130 beats per minute
Preschoolers (3-5 years): 80-120 beats per minute
School-age children (6-15 years): 70-100 beats per minute
Adults (18 years and older): 60-100 beats per minute
Athletes: 40-60 beats per minute

Abnormal Heart Rate

An abnormal heart rate may indicate an underlying health condition or disease. Some possible causes of an abnormal heart rate include:.

Arrhythmia
Tachycardia (fast heart rate)
Bradycardia (slow heart rate)
Heart disease
Thyroid issues
Electrolyte imbalance
Hormonal imbalance
Medications and supplements

When to See a Doctor

If you experience any of the following symptoms, you should see a doctor as soon as possible:.

Chest pain or discomfort
Shortness of breath
Dizziness or lightheadedness
Fainting or near-fainting
Fatigue or weakness
Irregular heartbeat
Swelling in the legs or feet

Summary

A normal heartbeat is typically between 60 and 100 beats per minute, but can vary based on age, health, and activity level. An abnormal heartbeat can be indicative of underlying health issues, and should be evaluated by a doctor if symptoms persist.