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A stress test (also called an exercise electrocardiogram or exercise tolerance test) is a medical test that checks how well your heart works when it is pumping fast. It usually involves walking on a treadmill or riding a stationary bike while your heart’s electrical activity is recorded.
Key facts
Yes, stress tests are a common diagnostic tool used to help diagnose heart problems such as coronary artery disease.
The test is often recommended for people who have symptoms like chest pain or shortness of breath, or who have risk factors for heart disease, such as high blood pressure, high cholesterol, diabetes, smoking, or a family history of heart conditions.
A stress test is one way doctors diagnose heart problems. They will also take your medical history, listen to your heart, and may check your blood pressure and cholesterol.
For a standard treadmill stress test: wear comfortable clothes and walking shoes. Do not eat a heavy meal for 2 hours before. Ask your doctor whether you should take your usual medicines. During the test, sticky patches (electrodes) will be placed on your chest and a blood pressure cuff on your arm. You will start walking slowly, and the speed and incline will increase. The test usually lasts about 10 minutes. Tell the staff if you feel chest pain, dizziness, or extreme shortness of breath.
The stress test itself does not treat anything – it helps your doctor decide if you need treatment. If the test shows your heart is not getting enough blood, your doctor may recommend lifestyle changes, medicines, or a procedure to open blocked arteries.
If your stress test reveals a problem, your doctor might suggest healthy eating, regular exercise, quitting smoking, and managing blood pressure and cholesterol. In some cases, they may recommend medicines such as blood thinners or medicines to control chest pain. Always take any prescribed medicines exactly as directed by your healthcare provider.
If your test shows severe blockages, your doctor may discuss procedures like angioplasty (opening a blocked artery with a small balloon) or bypass surgery. Your doctor will explain the risks and benefits of any procedure.
After your stress test, your doctor will give you results and a plan. If your heart is healthy, continue with your usual activities and follow heart-healthy habits. If you have a condition, follow your treatment plan and attend follow-up appointments.
Eat plenty of fruits, vegetables, whole grains, and lean protein. Limit salt, sugar, and unhealthy fats. Aim for at least 150 minutes of moderate exercise each week, like brisk walking, after checking with your doctor.
You cannot always prevent conditions that lead to a stress test, but you can lower your risk of heart disease with a healthy lifestyle.
If you have risk factors for heart disease, your doctor may recommend regular blood pressure and cholesterol checks. A stress test is only done when you have symptoms or a high risk.
The outlook is generally very good when heart problems are found early. Lifestyle changes and treatments can greatly improve your quality of life and reduce the risk of serious events. Most people who need a stress test go on to live full, active lives.
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Always verify with your doctor
Health guidelines vary by country and region. The information in this article is based on international clinical guidelines but may not reflect the specific guidelines, medications, or practices in your country. Always discuss your health concerns with your own doctor or healthcare provider, and refer to your local national health guidelines where available.
Important notice This information is for educational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about your specific situation. If you are experiencing a medical emergency, call your local emergency services immediately.
This article is educational and is prepared with reference to recognized health information and clinical guidance sources where available. Specific source links may vary by topic.
Last updated: July 9, 2026
Educational note: This information is for education only and is not a diagnosis.
Use it to support, not replace, advice from a licensed clinician.
If symptoms are severe, worsening, or urgent, call your local emergency number or seek emergency care.
Worrying about your heart health can cause anxiety. It is important to talk about your feelings with your doctor, family, or a counsellor. If you feel overwhelmed, remember that support is available – you are not alone.