Resting heart rate: what the number says
For adults, a resting heart rate of 60 to 100 beats a minute counts as normal, and well-trained endurance athletes often sit at 40 to 60. The population average is closer to 65: that was the mean daily value across 92,457 wearable users tracked for 2 years. The number is worth knowing because it tracks risk: in a meta-analysis of 46 cohort studies with more than 1.2 million participants, every extra 10 beats a minute at rest went with a 9 percent higher risk of death from any cause.
What counts as normal
Resting heart rate is the number of times your heart beats in a minute while you are awake, still and calm. The reference range used by MedlinePlus, the health library of the US National Library of Medicine, is 60 to 100 beats a minute for adults. Children run faster: 70 to 110 at 7 to 9 years and 80 to 130 at 1 to 2 years. Well-trained athletes, whose hearts pump more blood with each beat, commonly sit at 40 to 60.
That range is wide because it is a statistical boundary, not a health target. Real-world data show where most people fall. In a 2020 study of 92,457 adults in the United States who wore a wrist tracker for at least 35 weeks, the mean daily resting heart rate was 65 beats a minute. Individual averages ran from about 40 to 109, so two healthy people can differ by as much as 70 beats. Women had a higher rate than men in every age bracket, the average rose until roughly 50 years of age and then fell, and the lowest values appeared at a body mass index of 21 to 23 and in people sleeping 7 to 7.5 hours a night.
Within one person the number is far steadier. Most participants saw their weekly average move by only about 3 beats, and 80 percent never had a week in which it swung by 10 beats or more. That is the practical point: your own baseline, tracked over weeks, tells you more than a comparison with the population.
| Beats a minute | Typically seen in | What the evidence says | What to do |
|---|---|---|---|
| Below 40 | Some endurance athletes; otherwise unusual | Below the athlete range of 40 to 60 | See a doctor, urgently if dizzy or fainting |
| 40 to 50 | Well-trained hearts | Lowest mortality in the Copenhagen men (reference group, 50 or below) | Fine if you feel well |
| 51 to 60 | Fit adults | About 40 to 50 percent higher risk than 50 or below in Copenhagen, fully adjusted | Nothing to do |
| 61 to 70 | Population average (mean 65 in 92,457 wearable users) | 60 to 80 band: relative risk 1.12 versus the lowest category | Keep your baseline |
| 71 to 80 | Upper half of normal | Same 60 to 80 band; risk rises about 9 percent per 10 beats | Look at sleep, activity, caffeine |
| 81 to 90 | Normal by definition, but high | Relative risk 1.45 above 80; roughly twofold in Copenhagen | Regular exercise, doctor if persistent |
| 91 to 100 | Top of the normal range | Cardiovascular mortality significantly raised from 90 upwards | Discuss with a doctor |
| Above 100 | Tachycardia at rest | Outside the 60 to 100 reference range | See a doctor |
How to measure it so the number is worth reading
The cleanest reading is taken in the morning before you get up, or after at least 5 minutes sitting quietly. Place two fingers (not the thumb, which has a pulse of its own) on the inside of the wrist below the thumb, or on the side of the neck. Count the beats for a full 60 seconds. If you are short of time, count for 30 seconds and multiply by 2, or for 15 seconds and multiply by 4; the shorter the count, the larger the rounding error, so the 60-second count is the one to use for a baseline.
Caffeine, a large meal, a hot room, a tense phone call or a flight of stairs will all push the number up for a while, so take readings under the same conditions each time. A single high reading means little. Five to 7 readings on consecutive mornings, then averaged, give a baseline you can trust.
Wearables measure the same thing differently. Wrist devices estimate heart rate optically and usually report the lowest sustained rate over the day or during sleep, which tends to run a few beats below a manual morning count. Both methods are useful, but do not mix them when you compare one week with the next. In the 92,457-person study the data were nearly 33 million daily values from one type of device, which is what made the within-person trends readable.
What a higher number is associated with
The largest pooled analysis is a 2016 meta-analysis in the Canadian Medical Association Journal covering 46 prospective cohort studies. For all-cause mortality it drew on 1,246,203 people and 78,349 deaths; for cardiovascular mortality, on 848,320 people and 25,800 deaths. Each 10 beats a minute of higher resting heart rate was associated with a relative risk of 1.09 for death from any cause and 1.08 for cardiovascular death. Compared with the lowest category, people at 60 to 80 beats a minute had a relative risk of 1.12 for all-cause mortality, and people above 80 had a relative risk of 1.45. The dose-response curve, with 45 beats a minute as the reference, rose in a straight line for all-cause mortality, while cardiovascular mortality became significantly higher from 90 beats a minute upwards.
A common objection is that a fast resting pulse simply marks someone who is unfit. The Copenhagen Male Study tested exactly that. It followed 2,798 healthy employed men aged 53 to 75 for 16 years, during which 1,082 died. Their fitness had been measured on a bicycle test 15 years before the heart rate reading. After adjusting for that fitness, for leisure-time activity, smoking, blood pressure and cholesterol, the risk of death still rose by 16 percent per 10 beats a minute. Men above 90 beats a minute had 3.06 times the risk of men at 50 or below, men at 81 to 90 had about twice the risk, and men at 51 to 80 had a risk about 40 to 50 percent higher.
Two cautions. These are observational studies: they show association, not proof that lowering the pulse itself lengthens life. The meta-analysis authors also found substantial heterogeneity between studies and evidence of publication bias; after correcting for it, the relative risk per 10 beats fell to 1.04. The direction of the finding is consistent across studies, but the size of the effect is less certain than the headline figures suggest.
| Type of exercise | Trials | Effect on resting heart rate |
|---|---|---|
| Endurance training | 121 | Significant reduction in both sexes |
| Yoga | 21 | Significant reduction in both sexes |
| Strength training | 43 | Smaller effect |
| Combined endurance and strength | 15 | Smaller effect |
| All types together | 215 samples | 3.3 beats a minute lower than controls after a median of 12 weeks |
What moves the number
Exercise is the lever with the best evidence. A 2018 systematic review pooled 191 controlled studies with 12,952 participants, with programmes lasting a median of 12 weeks at 3 sessions a week. Across all studies, exercisers lowered their resting heart rate by 3.3 beats a minute more than controls, about 4.7 percent; in men the difference was 4.3 beats. Endurance training (121 trials) and yoga (21 trials) were the two forms that lowered it significantly in both sexes, while strength training (43 trials) had a smaller effect. Reductions were larger in people who started with a higher pulse and in younger participants. A change of 3 to 5 beats sounds modest, but it is the same order as the 10-beat step used in the mortality studies.
Other movers are shorter-lived. Dehydration, infection and fever push the rate up, which is why a morning pulse several beats above your baseline can be the first hint of an infection. Poor sleep, stress and caffeine late in the day do the same; the timing of the last cup matters here. Some medicines cut the rate, beta blockers most clearly; others, such as some asthma inhalers and decongestants, raise it. An overactive thyroid and anaemia both raise it persistently. Seasons matter a little: the wearable study found a peak in the first week of January and a low at the end of July, about 2 beats apart.
When the number needs a doctor
A resting pulse consistently above 100 beats a minute is called tachycardia, and it deserves a check even if you feel well, particularly if caffeine, illness or a bad night cannot explain it. Below 60 is bradycardia in the textbook sense, but in a fit person with no symptoms it is usually the sign of a well-trained heart. Below 40, or a slow rate combined with dizziness, fainting, unusual tiredness or breathlessness, needs assessment.
Rhythm matters as much as rate. When you count your pulse, notice whether the beats are evenly spaced. An irregular pulse, with or without a racing feeling, can point to atrial fibrillation, which raises the risk of stroke and is treatable. Palpitations that come with chest pain, shortness of breath or fainting are an emergency. If you take blood pressure medication or thyroid medication, or have heart disease, discuss any sustained change of more than 10 beats from your usual baseline with your doctor rather than adjusting anything yourself; the same applies in pregnancy, when the resting rate normally rises. If you want to use the number for training rather than screening, the Heart Rate Zones tool turns your resting and maximum rates into training zones.
Taking a reading you can compare
- Measure in the morning before getting up, or after 5 minutes sitting still
- Count for a full 60 seconds with two fingers on the wrist or neck
- Repeat on 5 to 7 consecutive mornings and average them for a baseline
- Note caffeine, poor sleep, illness or a hard workout the day before
- Do not mix manual counts with wearable values when comparing weeks
- Treat a sustained shift of 10 beats or more from baseline as worth a closer look
Frequently asked
Is a resting heart rate of 55 too low?
Not for most people. The adult reference range is 60 to 100, but well-trained athletes commonly sit at 40 to 60, and in the Copenhagen Male Study men at 50 or below had the lowest mortality. A slow pulse only needs a check if it comes with dizziness, fainting or unusual tiredness.
Why does my wearable show a lower number than my manual count?
Wrist devices usually report the lowest sustained rate over the day or during sleep, while a manual morning count is taken awake and sitting up. A gap of a few beats is normal; compare like with like.
Does a higher resting heart rate mean I will die sooner?
It is a marker of risk, not a verdict. Across 46 studies, each 10 beats a minute was associated with 9 percent higher all-cause mortality, but these are observational data and the estimate corrected for publication bias was closer to 4 percent. Fitness, sleep, weight and blood pressure are the things you can act on.
How quickly does exercise lower it?
In a review of 191 controlled studies, exercisers lowered their resting rate by 3.3 beats a minute more than controls over a median of 12 weeks at 3 sessions a week. Endurance training and yoga had the clearest effect.
Is it normal for women to have a higher resting heart rate?
Yes. In the 92,457-person wearable study, women had a higher average than men in every age bracket. The reference range of 60 to 100 is the same for both.
Should I worry about a jump of 10 beats for a few days?
Usually it signals something temporary: an infection, dehydration, poor sleep or a hard training day. In the wearable study 20 percent of people had at least one week with a swing of 10 beats or more. If it persists for more than 2 weeks with no explanation, or comes with symptoms, see a doctor.
Sources
- MedlinePlus Medical Encyclopedia: Pulse · US National Library of Medicine; reference ranges by age, athletes 40 to 60, how to count the pulse
- Zhang, Shen and Qi 2016, CMAJ: Resting heart rate and all-cause and cardiovascular mortality in the general population, a meta-analysis · 46 cohort studies, 1,246,203 participants; full text on PubMed Central
- Jensen et al. 2013, Heart: Elevated resting heart rate, physical fitness and all-cause mortality, a 16-year follow-up in the Copenhagen Male Study · 2,798 men, 1,082 deaths, adjusted for measured fitness
- Quer et al. 2020, PLOS ONE: Inter- and intraindividual variability in daily resting heart rate, a cohort study of 92,457 adults · Wearable data, nearly 33 million daily values, United States
- Reimers, Knapp and Reimers 2018, Journal of Clinical Medicine: Effects of exercise on the resting heart rate, a systematic review and meta-analysis · 191 controlled studies, 12,952 participants; full text on PubMed Central
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This guide is for general information. It does not replace medical advice or an examination.