A normal resting heart rate for adults falls between 60 and 100 beats per minute (bpm). That said, where you land within that range depends on your fitness level, age, stress, and what you’ve been doing in the minutes before you check. A well-trained endurance athlete might sit comfortably at 40 bpm, while someone who’s just had a cup of coffee could temporarily read higher than usual.
Normal Resting Heart Rate for Adults
The 60 to 100 bpm window is the standard reference range for adults over age 10. A lower resting heart rate generally signals that your heart is efficient: it doesn’t have to work as hard to move blood through your body. Most healthy adults who aren’t particularly active will find their resting rate somewhere in the 70s or 80s, while people who exercise regularly tend to drift into the 60s or lower.
Vigorous exercise is the most reliable way to lower your resting heart rate over time. As your heart muscle strengthens, it pumps more blood per beat, so it needs fewer beats to do the same job. Elite endurance athletes routinely have resting rates in the 40s, which is perfectly healthy for them even though it would technically fall below the “normal” threshold.
Heart Rate Ranges for Children
Children’s hearts beat significantly faster than adults’, and the younger the child, the faster the rate. This is normal. A smaller heart holds less blood per beat, so it compensates with speed. Here’s what to expect by age:
- Newborn to 3 months: 85 to 205 bpm awake, 80 to 160 bpm asleep
- 3 months to 2 years: 100 to 190 bpm awake, 75 to 160 bpm asleep
- 2 to 10 years: 60 to 140 bpm awake, 60 to 90 bpm asleep
- Over 10 years: 60 to 100 bpm awake, 50 to 90 bpm asleep
By the time a child reaches their early teens, their resting heart rate settles into the same adult range.
What Counts as Too Fast or Too Slow
A resting heart rate consistently above 100 bpm is called tachycardia. It can result from dehydration, anxiety, fever, anemia, thyroid problems, or heart rhythm disorders. Occasional spikes above 100, like after climbing stairs or during a stressful moment, are completely normal and don’t count.
On the other end, a resting rate below 60 bpm is called bradycardia. For fit people, this is usually a sign of cardiovascular efficiency, not a problem. Population studies often use 50 bpm rather than 60 as the threshold for concern, recognizing that many healthy people sit in the 50s without any symptoms. Bradycardia becomes a medical issue when it causes dizziness, fatigue, fainting, or shortness of breath, meaning the heart isn’t pumping enough blood to meet the body’s needs.
What Affects Your Resting Heart Rate
Your resting rate isn’t a fixed number. It shifts throughout the day and across weeks depending on several factors. Caffeine and other stimulants temporarily speed it up. Stress and anxiety activate your body’s fight-or-flight response, which directly raises heart rate and blood pressure. Even excitement can push your rate higher for a short period. Heat and dehydration also force the heart to work harder, because blood volume drops and the heart has to compensate with faster beats.
Medications matter too. Beta blockers, commonly prescribed for high blood pressure and heart conditions, bind to the receptors that adrenaline normally activates. This reduces both heart rate and blood pressure, so people on these medications will have a lower resting rate and a lower maximum rate during exercise. The size of the reduction depends on the dose.
Heart Rate During Exercise
During physical activity, your target heart rate depends on how hard you want to push. The American Heart Association recommends aiming for 50% to 70% of your maximum heart rate for moderate exercise (brisk walking, easy cycling) and 70% to 85% for vigorous exercise (running, high-intensity interval training).
To find your maximum heart rate, the classic formula is 220 minus your age. So a 40-year-old would estimate a max of 180 bpm. The problem is that this formula gets increasingly inaccurate as you age. Researchers at the Norwegian University of Science and Technology tested over 3,300 healthy adults and found the old formula can underestimate max heart rate by as much as 40 beats per minute in older adults. Their updated formula, 211 minus 0.64 times your age, tracks real-world measurements more closely. For that same 40-year-old, the updated formula gives a max of about 185 bpm instead of 180, a small difference that widens considerably past age 50 or 60.
Using the updated formula, a 40-year-old aiming for moderate exercise would target roughly 93 to 130 bpm, while vigorous effort would mean 130 to 157 bpm.
How to Check Your Heart Rate Accurately
For a true resting measurement, sit down and relax for a few minutes before checking. Your two best spots are the wrist and the neck.
To check at your wrist, turn your palm face up and place the tips of your index and middle fingers on the thumb side, in the soft groove between the wrist bone and the tendon. Press lightly until you feel each beat. Too much pressure can actually block blood flow and throw off your count. Watch a clock and count beats for a full 60 seconds. You can count for 15 seconds and multiply by four, but the full minute is more accurate, especially if your rhythm feels uneven.
To check at your neck, place two fingertips in the groove beside your windpipe on one side. The same rules apply: light pressure, 60-second count. Never press both sides of the neck at the same time, as this can make you dizzy or faint.
Wearable devices and smartwatches offer convenient continuous tracking, but they measure through the skin using light sensors, which can be less precise during movement. For a reliable baseline number, a manual check first thing in the morning, before getting out of bed, gives you the most consistent reading.
What Heart Rate Variability Tells You
If you use a fitness tracker, you may have noticed a metric called heart rate variability, or HRV. This measures the tiny fluctuations in timing between consecutive heartbeats. Counterintuitively, more variation is better. High HRV suggests your nervous system is flexible, able to ramp up quickly when you need energy and slow down smoothly when you’re resting. People with high HRV tend to handle physical and emotional stress more effectively.
Low HRV, on the other hand, can signal that your body is under strain, whether from poor sleep, chronic stress, illness, or overtraining. Your nervous system has two competing branches: one that accelerates your heart for emergencies, and one that slows it down for rest and recovery. HRV reflects the balance between these two systems. When both are working well and trading off smoothly, beat-to-beat timing varies more. When one branch dominates, like during prolonged stress, the rhythm becomes more rigid and HRV drops.
HRV is highly individual, so comparing your number to someone else’s isn’t particularly useful. Tracking your own trends over weeks and months gives you a better picture of how your body is adapting to exercise, sleep habits, and stress.