How to Lower a High Resting Heart Rate

A high resting heart rate is not always a sign of heart disease, but it can reflect stress, low fitness, illness, medication effects, or an underlying medical condition. Understanding the cause is the first step toward safely lowering it and protecting overall heart health.

Overview

A resting heart rate is the number of times the heart beats in one minute when the body is calm, seated or lying comfortably, and not exercising. In many adults, a typical resting heart rate falls between 60 and 100 beats per minute. Some people, especially those who are physically fit, may naturally have a lower resting heart rate. Others may notice that their heart rate tends to run higher during periods of stress, illness, poor sleep, or reduced physical activity.

A high resting heart rate does not always mean there is a serious problem. Temporary increases can happen after caffeine, emotional stress, dehydration, fever, pain, or certain medicines. However, when the heart rate stays elevated over time or increases without a clear reason, it may be a sign that the body is under strain or that an underlying condition needs attention.

Lowering a high resting heart rate starts with understanding why it is happening. For some people, simple changes such as improving fitness, sleeping better, reducing stimulant intake, and managing anxiety can help. For others, a medical assessment is needed to look for causes such as thyroid disease, anemia, infection, or a heart rhythm problem such as arrhythmia.

What Counts as a High Resting Heart Rate?

Resting heart rate should be measured when the person is calm and has not recently exercised, smoked, or consumed caffeine. It is often checked after sitting quietly for at least five minutes. Smartwatches and fitness trackers can be helpful, but manual pulse checks or medical devices may be more accurate in some situations.

In general, a resting heart rate above 100 beats per minute in adults is called tachycardia. Even so, a heart rate below that level can still feel unusually fast for some people if it is higher than their normal baseline. What matters most is the overall pattern: whether the heart rate is consistently elevated, whether symptoms are present, and whether there is an identifiable trigger.

Resting heart rate also changes with age, fitness level, body temperature, emotional state, and medications. A single high reading is usually less important than repeated high readings over several days or weeks. If the heart rate is regularly elevated or feels irregular, a doctor can help determine whether it is a temporary response or part of a larger medical issue.

Common Causes and Risk Factors

Many everyday factors can raise resting heart rate. These include emotional stress, anxiety, lack of sleep, dehydration, alcohol use, smoking, excess caffeine, and poor physical conditioning. Fever, pain, and recovery from illness can also temporarily increase heart rate as the body works harder than usual.

Some medical conditions can contribute as well. Examples include anemia, overactive thyroid, lung disease, low blood pressure, infections, and uncontrolled blood sugar problems. Certain medications, including some asthma inhalers, decongestants, thyroid medicines, and stimulants, may raise the heart rate. In some cases, the cause may be a heart rhythm disorder rather than a normal response to stress or activity.

Risk factors for a higher resting heart rate often overlap with general cardiovascular risk factors. These can include low fitness, obesity, smoking, chronic stress, and untreated high blood pressure. People with existing heart conditions may need closer follow-up, especially if a rapid heartbeat is accompanied by palpitations, dizziness, or exercise intolerance.

• Physical deconditioning
• Stress and anxiety
• Dehydration
• Poor sleep or sleep apnea
• Caffeine, nicotine, and alcohol
• Fever, infection, or pain
• Thyroid disease or anemia
• Heart rhythm disorders

Symptoms to Watch For

Some people with a high resting heart rate have no symptoms and only notice it on a wearable device or during a routine medical check. Others may feel that their heart is racing, pounding, fluttering, or beating harder than usual. This feeling is often described as palpitations.

Symptoms that can occur along with a fast heart rate include shortness of breath, fatigue, reduced exercise tolerance, lightheadedness, shakiness, sweating, or trouble sleeping. If anxiety is also present, it may be hard to tell whether the fast heart rate is causing the anxious feeling or the other way around. A careful history and examination can help separate these possibilities.

Certain warning signs need urgent attention. Chest pain, fainting, severe shortness of breath, confusion, or a sudden very fast or irregular rhythm should not be ignored. These symptoms do not always mean a dangerous problem, but they should be assessed quickly to rule out serious heart or circulation issues.

How to Lower a High Resting Heart Rate

The safest and most effective way to lower a high resting heart rate is to address the cause. For many people, regular aerobic exercise is one of the most helpful long-term steps. Walking, cycling, swimming, or similar activities can strengthen the heart over time so it pumps more efficiently. This often leads to a lower resting heart rate. Changes should be gradual, especially for anyone who has been inactive or has a known heart condition.

Hydration, good sleep, and stress reduction also matter. Dehydration can make the heart beat faster to maintain circulation. Poor sleep and chronic stress can keep the body’s stress hormones elevated, which may increase pulse rate. Relaxation techniques such as paced breathing, meditation, yoga, and limiting screen use before bed may be beneficial for some people.

Reducing stimulants can help when they are part of the problem. This may include cutting back on caffeine, energy drinks, nicotine, some cold remedies, or recreational stimulants. If a medicine seems to be increasing the heart rate, it is important not to stop it suddenly without medical advice. A doctor may suggest an alternative or a different dose if needed.

If an underlying medical condition is found, treatment is tailored to that issue. For example, correcting anemia, treating an infection, managing thyroid disease, or evaluating a rhythm disorder may lower the heart rate. In some cases, doctors may recommend heart tests such as an ECG or longer rhythm monitoring, and some patients may need specialist care in cardiology care.

Diagnosis and Medical Evaluation

A doctor usually begins by asking when the higher heart rate started, how often it happens, and whether there are triggers such as exercise, stress, caffeine, fever, or new medication use. The pattern of symptoms is important. A heart rate that rises suddenly and feels irregular may suggest a rhythm problem, while a steady increase may be more consistent with fever, anxiety, or dehydration.

Physical examination includes pulse, blood pressure, temperature, oxygen level, and heart and lung assessment. Depending on the situation, doctors may order blood tests to look for anemia, thyroid problems, infection, or other metabolic causes. An ECG records the heart’s electrical activity and can help identify rhythm abnormalities. If symptoms come and go, longer monitoring may be useful.

Some people may need additional testing, such as an echocardiogram to look at heart structure and function, or imaging and sleep assessment if another condition is suspected. If concerns about blocked heart arteries or exercise-related symptoms arise, a doctor may consider further evaluation, including a cardiac stress test. The goal is not simply to lower the number on a monitor, but to understand whether the heart is responding normally or signaling a treatable health issue.

Prevention and Self-care

Healthy daily habits can support a lower resting heart rate over time. Regular physical activity, balanced nutrition, maintaining a healthy weight, and avoiding smoking all support heart function. Limiting alcohol and stimulant drinks may also help, especially in people who notice their pulse rises after using them.

Sleep deserves special attention. Ongoing sleep deprivation can increase stress hormones and make the heart work harder. A consistent sleep schedule, a dark and quiet room, and avoiding heavy meals or caffeine late in the day can improve sleep quality. If snoring, pauses in breathing, or daytime exhaustion are present, a doctor may consider sleep apnea as a possible contributor.

Monitoring can be useful, but it should be done calmly. Checking the pulse repeatedly throughout the day can increase anxiety and make the heart race more. It is usually better to measure under similar conditions, such as first thing in the morning after resting. If the numbers remain high despite healthy changes, or if symptoms are worsening, medical advice is appropriate.

Near the end of the care pathway, some patients may benefit from specialist review for related conditions such as high blood pressure. Acibadem International’s multidisciplinary specialists and JCI-accredited hospitals diagnose and treat heart-related conditions for international patients when further evaluation is needed.

When to See a Doctor

A doctor should be consulted if the resting heart rate is consistently high, especially if it remains above the person’s usual range without a clear explanation. It is also sensible to seek medical advice if the fast heart rate comes with fatigue, dizziness, breathlessness, or reduced ability to exercise. Persistent symptoms deserve evaluation even in younger, otherwise healthy adults.

Urgent care is important if a fast resting heart rate occurs with chest pain, fainting, severe shortness of breath, bluish lips, new confusion, or a very irregular heartbeat. These symptoms may be caused by several conditions, some of which need prompt treatment. Getting checked early is the best way to identify the cause and guide safe care.

People with known heart disease, thyroid disease, anemia, or lung problems should be especially cautious if their resting heart rate changes noticeably. Bringing a record of pulse readings, symptom timing, medication use, and any wearable data can help the doctor make a more accurate assessment.

Frequently asked questions

What is a normal resting heart rate for adults?

For many adults, a normal resting heart rate is between 60 and 100 beats per minute. Well-trained athletes and very fit individuals may have lower rates. The most useful comparison is often a person's usual baseline rather than one isolated reading.

Can anxiety cause a high resting heart rate?

Yes. Anxiety and stress can activate the body's fight-or-flight response, which raises heart rate and blood pressure. If anxiety is frequent, learning stress-management strategies and discussing symptoms with a doctor can help.

Will exercise lower resting heart rate?

Regular aerobic exercise often lowers resting heart rate over time because it makes the heart stronger and more efficient. Results are usually gradual rather than immediate. Anyone with symptoms or a known heart condition should ask a doctor what level of exercise is safe.

Does caffeine increase resting heart rate?

It can, especially in people who are sensitive to caffeine or consume large amounts from coffee, tea, energy drinks, or supplements. The effect may be temporary, but repeated use can keep the heart rate higher in some people. Reducing intake gradually may help.

When is a high resting heart rate dangerous?

A fast resting heart rate needs urgent medical attention if it comes with chest pain, fainting, severe shortness of breath, or confusion. It also deserves prompt evaluation if it is suddenly very fast, feels irregular, or is much higher than usual without a clear reason.

Can dehydration make the heart beat faster?

Yes. When the body is low on fluids, the heart may beat faster to keep blood circulating effectively. Drinking enough water, especially in hot weather or during illness, can help prevent this cause of a higher pulse.

References

• American Heart Association
• National Heart, Lung, and Blood Institute
• Centers for Disease Control and Prevention
• European Society of Cardiology
• Mayo Clinic

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.