What Is a Dangerous Heart Rate? Normal Ranges & More

Understanding what constitutes a dangerous heart rate is crucial, as it can help you identify potential health risks and seek prompt medical attention when needed. 

Various factors such as age, activity level, and existing health conditions can influence what is considered a safe or dangerous heart rate for an individual.

What’s Considered a Dangerous Heart Rate

A heart rate that falls outside the normal rate at rest might be considered dangerous, as it can affect blood circulation and oxygen supply throughout the body. It is essential to remember that these values can vary depending on each person’s unique circumstances.

In some cases, monitoring and managing your heart rate can assist in avoiding serious health consequences that may arise from an unusually high or low pulse.

heart rate

What’s a Normal Resting Heart Rate?

Understanding your resting heart rate can provide essential insights into your cardiovascular health. A normal resting heart rate varies among individuals but generally falls within a certain range.

Normal Resting Heart Rate for Adults

Your normal resting heart rate generally falls between 60 to 100 beats per minute (bpm). For most healthy adults, it ranges from 55 to 85 bpm. 

Normal Resting Heart Rate for Adults

A well-trained athlete, however, could have a resting heart rate closer to 40 bpm, indicating better cardiovascular fitness.

Normal Resting Heart Rate for Kids

Infants and young children have higher resting heart rates than older kids, teenagers, and adults. As the age increases, the normal resting heart rate of a person generally decreases.

Normal Resting Heart Rate for Kids

Activity levels also play a role in determining your resting heart rate. Keep in mind that heart rates are variable and unique to each individual.

Factors that Can Affect Resting Heart Rate

Several factors can influence your resting heart rate.


Age is a significant factor in determining what might be considered a “normal” heart rate for an individual.

Factors that Can Affect Resting Heart Rate

As people age, the heart generally slows down, affecting the baseline for what is deemed a safe or risky heart rate.


Fever is a common factor that can elevate a resting heart rate. The body’s natural response to fighting infection or illness is generating heat, causing a fever, which subsequently raises heart rate.


Higher heart rates during a fever shouldn’t inherently cause concern, as this is normal physiology. However, if an abnormally high heart rate or other concerning symptoms accompany the fever, it’s advised to seek medical attention promptly.


Exercise is another key factor influencing heart rate. During physical activity, your heart rate increases to meet the demand for more oxygen and nutrients in your muscles.


While a higher heart rate during exercise is expected and healthy, an unusually fast pulse at rest or in recovery post-exercise should be attended to. This may indicate underlying heart problems.

Anxiety and Stress

Anxiety and stress are closely linked with heart rate as they trigger the body’s ‘fight or flight’ response. This reaction can cause an increase in heart rate, along with other physical symptoms.

Anxiety and Stress

Experiencing temporary heart rate increase due to stress is typically harmless. However, chronic anxiety can lead to sustained heart rate elevation, hence might necessitate professional intervention.

Caffeine and Smoking

Caffeine, found in beverages like coffee and energy drinks, can cause a short-term spike in heart rate. Similarly, nicotine from smoking provokes the release of adrenaline, leading to an increased heart rate and blood pressure.

Caffeine and Smoking

Consistent high consumption of caffeine or regular cigarette smoking might chronically elevate heart rates, potentially causing adverse cardiovascular outcomes. Therefore, moderation and caution are advised.


Medications can greatly influence your heart rate. Drugs like beta-blockers are designed to lower heart rate, while others, including certain antidepressants and decongestants, can raise it.


It’s vital to monitor heart rate while on such medications. If you notice significant heart rate changes or facets of concern, consult your healthcare provider immediately.

High Blood Pressure and Obesity

High blood pressure and obesity can negatively affect resting heart rate. An increase in blood pressure makes the heart work harder, raising the heart rate.

High Blood Pressure and Obesity

Similarly, obesity demands increased blood circulation, pressurizing the heart to beat faster. Incorporating regular exercise and a healthy diet could mitigate these risk factors.

Underlying Health Conditions

Underlying health conditions, like heart disease and hyperthyroidism, can increase the resting heart rate. These often cause the heart to pump faster to satisfy the body’s oxygen needs.

Always be aware of your heart rate if you have any pre-existing conditions. Unexpected rate changes should be reported to your healthcare provider.

Underlying Health Conditions

How to Check Your Own Heart Rate

  1. Firstly, find your pulse. Common checking sites include the wrist (radial artery) and neck (carotid artery).
  2. Place your index and middle finger on your pulse point. Press gently until you feel the heartbeat.
  3. Use a timer for 30 seconds and count the number of beats during this period.
  4. Multiply the number of beats counted by 2 to get your heart rate in beats per minute (bpm).
How to Check Your Own Heart Rate

Don’t forget that it’s only considered a normal resting heart rate if it’s between 60 and 100 beats per minute. While high or low heart rates can be dangerous, always consider factors such as age, activity level, and medical conditions.

An alternative way to check your heart rate is by using medical equipment and personal devices.

medical equipment and personal devices

EKG is a medical test done by healthcare professionals to measure the heart’s electrical activity. An EKG can provide a more accurate and detailed assessment of your heart rate and rhythm if needed.

When to See a Doctor

Experiencing a high heart rate, also known as tachycardia, could be due to external factors or an underlying issue. It’s important to monitor your resting heart rate to prevent complications.


If you suffer from chest pain, dizziness, palpitations, confusion, lightheadedness, or conditions like hyperthyroidism and hypothyroidism, consult a healthcare provider. 

Regardless of your fitness, pay attention to pain, fainting, and shortness of breath. Keep an open line of communication with your health care provider to handle any discrepancies or changes in your heart rate safely and timely.


What You Can Do for Your Heart Rate

Managing your heart rate is a crucial aspect of maintaining cardiovascular health. In this section, we will discuss actionable steps to monitor and improve your heart rate effectively.

Regular Exercise

Regular exercise is key to maintaining a healthy heart rate. Aim for at least 150 minutes per week of moderate-intensity activities, such as brisk walking, or 75 minutes of vigorous physical activity, like running.

Regular Exercise

Remember that consistency matters. Establishing a routine will help your body adapt and maintain an optimal heart rate range.

Manage Stress Levels

Managing stress levels is vital for regulating heart rate. High stress prompts the ‘fight or flight’ response, raising your heart rate.

Manage Stress Levels

Methods such as deep breathing exercises, meditation, and yoga can help manage stress. If stress and anxiety persistently elevate your heart rate, consider seeking professional help for long-term stress management strategies.

Limit Caffeine Intake

Caffeine is a stimulant that can temporarily increase heart rate. For individuals sensitive to caffeine, this surge can be more pronounced.

Limit Caffeine Intake

To maintain a normal heart rate, it is advised to limit daily caffeine intake. This includes coffee, energy drinks, and some medications. Consider decaffeinated alternatives if necessary.

Get Enough Sleep

Sleep plays a vital role in regulating heart rate. Lack of quality sleep over time can lead to elevated heart rate and associated conditions like hypertension.

Get Enough Sleep

Aim for 7-9 hours of uninterrupted sleep per night. Improving sleep hygiene by creating a dark, quiet, comfortable sleeping environment can aid in achieving this goal.

Frequently Asked Questions

How does age affect normal heart rate?

Age impacts your normal heart rate. Generally, as you grow older, your resting heart rate decreases.

How does age affect normal heart rate

Infants have a higher resting heart rate, while adults typically have a resting pulse rate between 60 and 100 beats per minute (BPM).

What is a concerning low heart rate for adults?

For adults, a concerning low heart rate is generally under 60 BPM at rest. However, this may not always indicate danger, as factors like fitness levels or certain medications can affect your heart rate.

What is a concerning low heart rate for adults

Consult your doctor if you’re concerned about a low heart rate.

At what heart rate can a heart attack occur?

There’s no specific heart rate at which a heart attack occurs. Instead, sustained high heart rates or irregular rhythms can be indicative of underlying heart issues.

At what heart rate can a heart attack occur

If you experience sudden chest pain, shortness of breath, or other concerning symptoms, seek medical help immediately.

What constitutes a dangerous heart rate while running?

When you are running, your heart rate increases significantly as compared to your resting heart rate. It’s essential to avoid exceeding your estimated maximum heart rate during exercise, typically calculated as 220 minus your age.

What constitutes a dangerous heart rate while running

Overexertion can lead to injury or dangerous conditions. Gradually progress your workouts to avoid unnecessary health risks.