Blood pressure is one of those health numbers that can change with age, stress, sleep, and activity. If you exercise regularly, you might expect your reading to be lower than someone who is less active. That can happen, but being fit does not change the usual blood pressure categories or guarantee that your blood pressure is healthy.
For adults, a normal blood pressure reading under current US guidelines is below 120/80 mm Hg. There is no separate higher “normal” range for older adults or a special target for athletes. Age and fitness can affect blood pressure and the likelihood of developing high blood pressure, but your reading still needs to be understood in context and measured properly.
What the two blood pressure numbers mean
A blood pressure reading has two numbers. The top number, called systolic pressure, measures the pressure in your arteries when your heart beats. The bottom number, called diastolic pressure, measures the pressure between beats, while your heart rests.
The reading is written in millimeters of mercury, abbreviated as mm Hg. For example, a reading of 118/76 mm Hg means a systolic pressure of 118 and a diastolic pressure of 76.
Both numbers matter. If either number falls into a higher category, the reading is classified in that category. A single measurement does not diagnose hypertension, though. Blood pressure varies throughout the day, so health professionals use repeated readings and may ask you to measure at home or wear a monitor before confirming a diagnosis.
Blood pressure categories for adults
The 2025 US guideline keeps the same adult blood pressure categories used in recent American guidelines. These categories help describe readings and guide conversations with a healthcare professional. They are not a substitute for a diagnosis or personal medical advice.
| Blood pressure category | Systolic pressure | Diastolic pressure |
|---|---|---|
| Normal | Below 120 mm Hg | Below 80 mm Hg |
| Elevated | 120 to 129 mm Hg | Below 80 mm Hg |
| Stage 1 hypertension | 130 to 139 mm Hg | 80 to 89 mm Hg |
| Stage 2 hypertension | 140 mm Hg or higher | 90 mm Hg or higher |
The words “and” and “or” matter when interpreting these ranges. Normal means both numbers are below their limits. For the other categories, either number can place a reading in that category. For example, a reading of 128/84 mm Hg falls into Stage 1 hypertension because the diastolic number is in the 80 to 89 range.
The category is a useful starting point, but it is not the whole picture. Your overall health, medical history, and risk of heart disease or stroke can affect what a clinician recommends. In the US, the 2025 guideline recommends discussing treatment based on the blood pressure reading alongside a person’s cardiovascular risk and other health factors.
Does the healthy range change as you get older?
The adult categories do not change just because you turn 40, 60, or 80. A reading of 150/90 mm Hg is not considered normal for an older adult simply because blood pressure often rises with age. The same adult categories apply across age groups.
Blood pressure does tend to change over time. As large arteries become stiffer with age, systolic pressure often rises. Diastolic pressure may rise earlier in adulthood, then level off or fall later in life. This can make the gap between the two numbers wider in older adults. A higher systolic reading still deserves attention, even when the diastolic number is within the normal range.
Children and teenagers are assessed differently. Their blood pressure is interpreted using age, sex, and height, so adult ranges should not be used to judge a child’s reading. Pregnancy also requires its own clinical context because blood pressure changes during pregnancy can need prompt medical attention.
Does fitness give you a different target?
There is no separate adult blood pressure target for athletes or highly active people. Regular physical activity can help lower resting blood pressure, and exercise training has been shown to improve resting readings in many adults. But training does not protect everyone from hypertension, and a low resting heart rate does not tell you whether your blood pressure is healthy.
Some well trained people have low resting blood pressure without any problem. A low reading is more important to discuss with a healthcare professional if it comes with symptoms such as dizziness, fainting, weakness, or blurred vision, or if it is unusual for you. Do not use fitness level alone to decide whether a reading is safe.
Blood pressure also changes during exercise. It is expected to rise while you are working hard because your heart is pumping more blood to meet the muscles’ demands. A reading taken right after a run, a hard workout, or a heavy lifting session does not represent your resting blood pressure. For a resting measurement, wait until you are calm and have followed the preparation steps below.
How to get a reliable reading
A rushed or poorly positioned measurement can give you a misleading result. If you are checking at home, use a validated automatic monitor with an upper arm cuff that fits correctly. A cuff that is too small or too large can affect the reading.
For a more reliable measurement, avoid exercise, smoking, and caffeinated drinks for at least 30 minutes beforehand. Empty your bladder, then sit quietly for at least five minutes with your back supported and both feet flat on the floor. Keep your legs uncrossed and rest your bare arm on a surface so the cuff sits at about heart level. Stay quiet during the reading.
If one measurement looks unusual, take another after a short rest and record both readings. A healthcare professional may ask you to take measurements at home over several days or use an ambulatory monitor that records readings during your normal routine and sleep. This helps show whether a high clinic reading is persistent or mainly appears in a medical setting.
What to do if your reading is high
If your readings are repeatedly above the normal range, arrange a conversation with a healthcare professional. High blood pressure often has no obvious symptoms, so feeling well does not confirm that your reading is safe. A diagnosis should be based on repeated measurements and, when appropriate, readings outside the clinic.
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A reading of 180/120 mm Hg or higher needs prompt attention. Sit quietly for a minute and measure again. If it remains that high, contact a healthcare professional immediately. If a very high reading comes with symptoms such as chest pain, shortness of breath, weakness, numbness, vision changes, or trouble speaking, call emergency services.
Exercise can be part of blood pressure management, but it is not a replacement for prescribed medication or clinical care. Regular aerobic activity and strength training support cardiovascular health, while treatment decisions depend on your readings and overall risk. If you already have hypertension or another heart condition, ask your healthcare professional how to exercise safely and whether your treatment plan needs adjusting.
Key takeaways
| Topic | Key takeaway |
|---|---|
| Normal adult blood pressure | Below 120/80 mm Hg under current US categories |
| Age | Adult categories do not become higher simply because you are older |
| Fitness | Exercise can improve resting blood pressure, but it does not create a different target |
| Measurement | Rest quietly and use a correctly sized upper arm cuff for a useful reading |
| Repeated high readings | Discuss them with a healthcare professional, even if you feel well |
| Very high readings | A repeated reading of 180/120 mm Hg or higher needs prompt attention, especially with symptoms |
References
- American Heart Association (2025) Understanding Blood Pressure Readings. Dallas, TX: American Heart Association.
- Cornelissen, V.A. and Smart, N.A. (2013) ‘Exercise training for blood pressure: a systematic review and meta-analysis’, Journal of the American Heart Association, 2(1), e004473.
- Jones, D.W. et al. (2025) ‘2025 AHA/ACC/AANP/AAPA/ABC/ACCP/ACPM/AGS/AMA/ASPC/NMA/PCNA/SGIM guideline for the prevention, detection, evaluation, and management of high blood pressure in adults’, Circulation, 152, pp. e114–e218.
- Muntner, P. et al. (2019) ‘Measurement of blood pressure in humans: a scientific statement from the American Heart Association’, Hypertension, 73(5), pp. e35–e66.
- US Preventive Services Task Force (2021) ‘Screening for hypertension in adults: US Preventive Services Task Force reaffirmation recommendation statement’, JAMA, 325(16), pp. 1650–1656.
