A blood pressure of 105/72 is a good reading. It falls squarely in the “normal” category, which both the American Heart Association and American College of Cardiology define as below 120/80 mmHg. Your top number (systolic) is well under the 120 threshold, and your bottom number (diastolic) sits comfortably below 80. This is the range associated with the lowest cardiovascular risk.
Where 105/72 Falls on the Scale
The 2025 AHA/ACC blood pressure guidelines use a straightforward classification system. Normal is below 120/80. Elevated is 120 to 129 systolic with diastolic still under 80. Stage 1 hypertension starts at 130/80, and stage 2 begins at 140/90. At 105/72, you’re not close to any of those worry zones.
A large study of healthy adults published through the National Institutes of Health found that people with systolic readings between 90 and 129 had no increased cardiovascular risk compared to one another, as long as they didn’t have other risk factors. In other words, there’s no meaningful difference in heart disease risk between someone at 105 and someone at 95 or 120, provided they’re otherwise healthy. The cardiovascular event rate for people in the 100 to 109 systolic range was just 2.15 per 1,000 person-years, one of the lowest recorded groups.
Is It Too Low?
Some people see a number like 105 and worry it might be on the low side. It’s not. Clinically low blood pressure, called hypotension, is defined as a reading below 90/60. Your reading is well above both of those thresholds.
Even readings that technically qualify as low aren’t considered a problem unless they cause symptoms. Those symptoms include dizziness, lightheadedness, blurred vision, fainting, unusual fatigue, or trouble concentrating. If you feel fine at 105/72, there’s nothing to address. A sudden drop of 20 points in systolic pressure can cause dizziness or fainting, but a stable reading in this range is simply healthy.
Why Some People Run Lower
Several factors can explain a resting blood pressure in the low-normal range. Regular exercise is one of the most common. Physical activity causes lasting changes to the heart and blood vessels: stronger cardiac output, more elastic arteries, and lower resistance in the blood vessels. In studies of young athletes, systolic pressures commonly range from the high 80s to the low 110s, and diastolic pressures from the mid-40s to the low 80s. Researchers describe this as a “low-normal level” that reflects cardiovascular fitness rather than any deficit.
Beyond exercise, body size plays a role. Smaller individuals tend to have lower blood pressure. Genetics matter too. Some families simply run lower across generations. Pregnancy can temporarily lower blood pressure, particularly in the first and second trimesters. Adequate hydration and a diet lower in sodium can also keep numbers on the lower end of normal.
What Matters More Than One Reading
A single blood pressure reading is a snapshot, not a diagnosis. Blood pressure fluctuates throughout the day based on stress, activity, caffeine intake, and even the time you last ate. If you’re monitoring at home, the accuracy of your technique matters as much as the monitor itself.
For reliable readings, sit quietly for at least five minutes before measuring. Keep your feet flat on the floor and your back supported. Your arm should rest on a flat surface at heart level, with the cuff placed on bare skin just above the bend of your elbow. The American Heart Association recommends using a validated monitor (you can check at validatebp.org) and bringing it to a healthcare appointment once a year to confirm its accuracy.
Taking two or three readings a minute apart and averaging them gives you a more accurate picture than relying on a single measurement. Tracking your numbers over weeks or months is the most useful approach, since it reveals your typical range rather than a one-time result that might be unusually high or low.
The Goal for Most Adults
The 2025 guidelines set a treatment target of below 130/80 for all adults, regardless of age. That target is meant for people managing hypertension. If you’re already sitting at 105/72 without medication, you’re in the range that clinicians are trying to help their patients reach. The same guidelines apply whether you’re 30 or 70. While systolic pressure does tend to rise with age as arteries stiffen and plaque accumulates, the definition of “normal” doesn’t shift upward to accommodate that. A reading of 105/72 is healthy at any adult age.
There’s no bonus for pushing blood pressure lower through lifestyle changes if you’re already in the normal range. The goal is simply to stay here. Regular physical activity, a balanced diet, maintaining a healthy weight, managing stress, and limiting alcohol are the standard recommendations for keeping blood pressure where it is as you age.