The average resting heart rate for adults falls between 60 and 100 beats per minute (bpm). Most healthy adults at rest will land somewhere in the middle of that range, though your specific number depends on your age, sex, fitness level, and what’s happening in your body at the moment.
Normal Resting Heart Rate by Age
Heart rate changes dramatically from birth through adulthood. Newborns have the fastest hearts, beating 100 to 205 times per minute during their first four weeks. As the heart grows larger and stronger, it doesn’t need to beat as often to move the same volume of blood.
- Newborn (birth to 4 weeks): 100 to 205 bpm
- Infant (4 weeks to 1 year): 100 to 180 bpm
- Toddler (1 to 3 years): 98 to 140 bpm
- Preschool (3 to 5 years): 80 to 120 bpm
- School age (5 to 12 years): 75 to 118 bpm
- Adolescent (13 to 17 years): 60 to 100 bpm
- Adult (18 and older): 60 to 100 bpm
By the teenage years, the heart has reached close to adult size, and resting heart rate settles into the 60 to 100 bpm range where it stays for the rest of life.
Differences Between Men and Women
Women tend to have slightly faster resting heart rates than men. The average for adult women is about 79 bpm, compared to 74 bpm for adult men. The reason is straightforward: female hearts are physically smaller, weighing roughly 25% less than male hearts by adulthood. A smaller heart holds less blood per beat, so it compensates by beating more frequently to deliver the same supply of oxygen to the body.
Why Athletes Have Lower Heart Rates
Highly active people and endurance athletes can have resting heart rates as low as 40 bpm without any health concerns. Regular aerobic exercise makes the heart muscle stronger and more efficient. Each contraction pushes out a larger volume of blood, so the heart simply doesn’t need to beat as often to meet the body’s demands at rest. This is one reason why a lower resting heart rate, within reason, is generally considered a sign of better cardiovascular fitness.
If you’re not an athlete and your resting heart rate is consistently below 60, that’s technically called bradycardia. It isn’t always a problem, but if it comes with dizziness, fatigue, or shortness of breath, it’s worth getting checked.
What Controls Your Heart Rate
Your heart has a built-in pacemaker called the SA node, a small cluster of cells in the upper right chamber that fires electrical impulses to trigger each heartbeat. You don’t have to think about it. Your nervous system adjusts the speed of those impulses automatically based on what your body needs.
Two branches of your nervous system handle this. The “fight or flight” branch speeds up the SA node when you’re active, stressed, or in danger. The “rest and digest” branch slows it down when you’re calm, sleeping, or recovering. These two systems are constantly balancing each other, which is why your heart rate rises the moment you stand up from the couch and drops again when you sit back down.
What Raises or Lowers Your Heart Rate
Plenty of everyday factors push your heart rate outside its usual resting range. Caffeine, nicotine, stress, anxiety, dehydration, fever, and some medications all tend to speed things up. Research from the American Heart Association found that vaping or smoking a cigarette increases heart rate by about 4 bpm compared to people who don’t use nicotine. That may sound small, but it reflects activation of the stress-response branch of your nervous system, which also raises blood pressure and puts extra demand on artery walls.
On the other side, regular physical activity, good sleep, and relaxation techniques bring resting heart rate down over time. Certain medications, particularly beta-blockers, also lower it deliberately.
How to Measure Your Resting Heart Rate
The most accurate reading comes first thing in the morning, before you get out of bed and before caffeine. Place two fingers (index and middle) on the inside of your wrist just below the base of your thumb, or on the side of your neck just below the jawline. Count the beats for 30 seconds and multiply by two.
If you’re using a fitness tracker or smartwatch, check the overnight data rather than spot-checking during the day. A single reading can be skewed by movement, stress, or even a full bladder. Tracking the trend over weeks gives you a much clearer picture of your baseline. A resting heart rate that gradually drops over months of consistent exercise is one of the most reliable indicators that your fitness is improving.
Maximum Heart Rate and Exercise Zones
Your maximum heart rate is the fastest your heart can beat during all-out exertion. The classic formula is 220 minus your age, so a 40-year-old would have an estimated max of 180 bpm. A more accurate version, developed from a large meta-analysis published in the Journal of the American College of Cardiology, uses 208 minus 0.7 times your age. For that same 40-year-old, the updated formula gives 180 bpm (in this case the same), but the difference becomes meaningful in older adults, where the traditional formula tends to underestimate the true maximum.
This matters for exercise. Moderate-intensity activity puts you at roughly 50 to 70% of your maximum heart rate. Vigorous activity lands in the 70 to 85% range. If your estimated max is too low, you might end up exercising below the intensity needed for real cardiovascular benefit, or a clinical stress test might be stopped too early to produce useful results.
When Heart Rate Falls Outside the Normal Range
A resting heart rate consistently above 100 bpm is called tachycardia. It can be caused by anxiety, anemia, thyroid problems, dehydration, infection, or heart-rhythm disorders. A temporarily elevated rate during illness or stress is expected, but a persistently fast pulse at rest deserves attention.
Bradycardia, a resting rate below 60 bpm, is normal in fit individuals but can signal a problem in others. When the heart beats too slowly to supply the brain and organs with enough blood, symptoms like lightheadedness, confusion, and unusual fatigue tend to appear. The number alone doesn’t tell the whole story. A rate of 55 bpm in a regular runner is healthy. The same rate in a sedentary person experiencing fainting spells is not.