What is resting heart rate?
Your resting heart rate (RHR) is simply how many times your heart beats per minute when you're completely at rest — sitting quietly or lying down, not moving, not stressed, not digesting a big meal. It reflects how hard your heart has to work to keep your body running at baseline.
A lower resting heart rate generally means a stronger, more efficient heart. Each beat pumps more blood, so it doesn't need to beat as often. Endurance athletes often have resting heart rates in the 40–60 bpm range — sometimes even lower.
Why it matters for longevity
Resting heart rate is one of the simplest indicators of cardiovascular fitness. Research consistently shows that a higher RHR is associated with increased risk of heart disease, stroke, and all-cause mortality — even after accounting for other risk factors.
A study in the journal Heart found that every 10 bpm increase in resting heart rate was associated with roughly a 10–20% increase in mortality risk. On the other end, people with lower resting heart rates tend to live longer and have fewer cardiovascular events.
Your RHR also responds to changes in your fitness and health. As you get fitter, your RHR drops. If you're overtraining, stressed, or getting sick, it rises. That makes it a useful day-to-day check on your body.
What the numbers mean
The conventional medical range for resting heart rate is 60–100 bpm. Anything within that range is considered "normal." But for longevity, the bar is higher:
- Optimal: below 65 bpm
- Good: 65–72 bpm
- Average: 72–80 bpm
- Elevated: above 80 bpm (worth investigating)
If your resting heart rate is consistently above 80 bpm, it may be worth talking to a doctor — especially if you also experience fatigue, shortness of breath, or dizziness. A very low RHR (below 40 bpm) in a non-athlete can sometimes signal a heart rhythm issue.
What affects it
- Fitness level: This is the biggest factor. Regular aerobic exercise makes your heart stronger and more efficient, lowering your RHR over time.
- Stress and anxiety: and adrenaline raise your heart rate. Chronic stress keeps it elevated even at rest.
- Sleep quality: Poor sleep raises resting heart rate. A rested body beats more slowly and efficiently.
- Caffeine and stimulants: Coffee, pre-workout supplements, and certain medications can temporarily raise your RHR.
- Dehydration: When you're dehydrated, your blood volume drops and your heart compensates by beating faster.
- Thyroid function: An overactive thyroid ( low TSH) can cause a chronically elevated heart rate.
How to get tested
You don't need a lab for this one. The best way to measure your resting heart rate is first thing in the morning, before getting out of bed. Place two fingers on your wrist or neck, count the beats for 30 seconds, and multiply by two. Do this for several days and take the average for a more reliable number.
Fitness trackers and smartwatches also track RHR continuously and can show you trends over time. Try our Resting Heart Rate Calculator to see where your number falls compared to your age group.
How to improve it
- Do regular cardio. — walking briskly, cycling, swimming at an easy pace — is the most effective way to strengthen your heart and lower RHR. Aim for 3–5 sessions per week.
- Manage stress. Chronic stress keeps your nervous system in fight-or-flight mode. Daily practices like deep breathing, walks in nature, or simply resting without screens can help your heart rate come down.
- Sleep more, sleep better. Prioritize 7–9 hours of quality sleep. Your heart rate drops to its lowest during deep sleep, and consistently good sleep lowers your daytime RHR too.
- Stay hydrated. Proper supports healthy blood volume, so your heart doesn't have to work as hard.
- Train with heart rate zones. Using our Heart Rate Zone Calculator helps you train at the right intensity to build cardiovascular efficiency without overtraining.