Resting Heart Rate: What Your Number Says About Your Health

Resting heart rate (RHR) is the number of times your heart beats per minute while you are awake, calm, and have not recently eaten, exercised, or had caffeine. For most adults, a normal resting heart rate falls between 60 and 100 beats per minute (bpm). That range comes from the American Heart Association and is widely used in clinical practice.

But “normal” is not the same as “optimal.” Large observational studies have found that adults with a resting heart rate at the higher end of that range tend to have worse cardiovascular outcomes than those at the lower end, even when the rate is still technically normal. A resting pulse in the 50s or low 60s is common in people who exercise regularly and is generally a sign of good cardiovascular fitness.

The single most useful thing you can do with your resting heart rate is track it over time. A number that drifts up by 5 to 10 bpm over several weeks, without an obvious cause, is worth paying attention to. A single high reading after a bad night’s sleep is usually not.

How to measure your resting heart rate correctly

Timing and conditions matter more than the device you use.

• Measure first thing in the morning, before you get out of bed, before coffee, and before any activity.
• Use two fingers (index and middle) on your wrist or neck. Do not use your thumb, which has its own pulse.
• Count for 60 seconds, or count for 30 seconds and multiply by two. A full minute is more accurate if your rate is irregular.
• Take it on several days and average the results. One reading tells you very little.
• Wearables are fine for trends. Most consumer devices and chest straps are reasonably accurate at rest, though wrist-based optical sensors can struggle with very low rates or cold hands.

If you take a beta blocker or another rate-lowering medication, your RHR will read lower than your true intrinsic rate. That is expected and not a problem, but it means you should compare your numbers to your own baseline, not to a population average.

Normal ranges by age

Resting heart rate norms shift with age, mostly because maximum heart rate declines steadily while resting rate tends to rise slightly in later adulthood.

• Children (6–15 years): roughly 70–100 bpm.
• Adults (18 and older): roughly 60–100 bpm, per the American Heart Association.
• Older adults (65+): often 60–80 bpm at rest, though many healthy older adults sit in the 60s.

These are population ranges, not personal targets. A well-trained 70-year-old may rest at 50 bpm, and a sedentary 40-year-old may sit at 85 bpm. Both can be “normal” for that person, but they carry different implications for long-term cardiovascular risk.

What a low resting heart rate means

A resting heart rate below 60 bpm is called bradycardia. In trained individuals, it is usually a sign of an efficient heart: a stronger left ventricle pumps more blood per beat, so fewer beats are needed to move the same volume. Endurance athletes, cyclists, and long-distance runners commonly rest in the 40s and 50s.

Bradycardia is not automatically benign, though. It deserves evaluation if it comes with:

• Dizziness, lightheadedness, or fainting
• Unusual fatigue or exercise intolerance
• Shortness of breath with normal activity
• A rate below 50 bpm in someone who is not an endurance athlete

In those cases, the cause may be a conduction problem in the heart, an underactive thyroid, an electrolyte disturbance, or a medication effect. This is a conversation for your clinician, not a self-diagnosis. For general guidance on when to seek care, see our medical disclaimer.

What a high resting heart rate means

A resting heart rate persistently above 100 bpm is called tachycardia. Common non-emergency causes include fever, dehydration, anxiety, pain, anemia, an overactive thyroid, poor sleep, alcohol, and stimulants including caffeine and some decongestants.

More important than the tachycardia threshold is the pattern in the 80s and 90s. Multiple large cohort studies, including long-running work from the Framingham Heart Study and others, have found that a higher resting heart rate is associated with higher all-cause and cardiovascular mortality, independent of fitness and other risk factors. This is observational data, so it cannot prove cause and effect. A high resting rate may be a marker of underlying deconditioning, sympathetic nervous system overactivity, or subclinical disease rather than the cause itself.

Either way, a resting heart rate that sits in the 80s or 90s for months is worth investigating rather than ignoring.

What actually changes your resting heart rate

Things that lower it

• Aerobic training. Consistent zone 2 and higher-intensity cardio is the strongest lever. Regular endurance training commonly lowers resting heart rate by 5 to 15 bpm over months. Our article on why zone 2 matters explains how to build that base.
• Better sleep. Sleep deprivation raises sympathetic tone and resting heart rate. See sleep and metabolic health.
• Less alcohol. Even moderate drinking raises overnight and morning heart rate in many people.
• Weight loss, if you carry excess weight. A higher body mass index is associated with a higher resting heart rate, partly through increased cardiac workload.
• Treating underlying conditions such as anemia, thyroid disease, or sleep apnea.

Things that raise it

• Dehydration, fever, and acute illness
• Psychological stress and anxiety
• Caffeine, nicotine, and some cold medications
• Overtraining, which often shows up as a rising morning heart rate before performance declines
• Pregnancy, which raises resting heart rate by roughly 10 to 20 bpm by the third trimester

Heart rate variability, briefly

Heart rate variability (HRV) measures the variation in time between heartbeats, not the rate itself. Higher HRV generally reflects a more balanced autonomic nervous system and better recovery capacity. Many wearables report it. HRV is highly individual and noisy, so it is most useful as a personal trend alongside resting heart rate, not as a standalone score to compare against others.

Resting heart rate and your training zones

Resting heart rate is one input into heart rate zone calculations, though it plays a smaller role than maximum heart rate. The Karvonen method uses both:

Target heart rate = ((max HR − resting HR) × intensity %) + resting HR

This is why an accurate resting heart rate matters if you train by zones. A 10 bpm error in your resting rate shifts every zone boundary. For a broader look at how fitness translates into health outcomes, see VO₂ max and longevity.

When to see a clinician

Contact your clinician if you have a resting heart rate consistently below 50 bpm without being an endurance athlete, consistently above 100 bpm at rest, a sudden change of 10 bpm or more that persists, or any of the symptoms listed above. Also flag it if you faint, have chest pain, or feel short of breath at rest.

Practical takeaway

• Measure your resting heart rate first thing in the morning, on several days, and average the results.
• Know your own baseline. A rising trend matters more than any single reading.
• Aim for the 50s to 60s if you are healthy and training, but do not chase a number at the expense of symptoms.
• Treat sleep, alcohol, hydration, and aerobic training as the four biggest levers you control.
• Recheck after four to eight weeks of consistent change before drawing conclusions.

Run your own numbers with the FitMetrics calculator to see how your resting heart rate fits alongside your other health markers.

References and further reading

• American Heart Association: All About Heart Rate (Pulse)
• American Heart Association: Target Heart Rates Chart
• Framingham Heart Study: long-term cohort findings on heart rate and mortality
• Jouven X, et al. Heart-rate profile during exercise as a predictor of sudden death. New England Journal of Medicine
• Nauman J, et al. Temporal changes in resting heart rate and deaths from ischemic heart disease. JAMA
• American College of Sports Medicine: Guidelines for Exercise Testing and Prescription
• Task Force of the European Society of Cardiology and the North American Society of Pacing and Electrophysiology: Heart rate variability standards of measurement