A normal resting heart rate for adults falls between 60 and 100 beats per minute (bpm). That’s measured while you’re awake, calm, and sitting still. Your actual number within that range depends on your fitness level, age, sex, and what’s happening in your body at the moment.
Normal Heart Rate by Age
Children’s hearts beat considerably faster than adults’, and the range narrows as they grow. Here’s what’s typical at rest:
- Newborns (birth to 4 weeks): 100 to 205 bpm
- Infants (4 weeks to 1 year): 100 to 180 bpm
- Toddlers (1 to 3 years): 98 to 140 bpm
- Preschoolers (3 to 5 years): 80 to 120 bpm
- School-age children (5 to 12 years): 75 to 118 bpm
- Adolescents (13 to 17 years): 60 to 100 bpm
- Adults (18+): 60 to 100 bpm
These numbers apply when awake and at rest. Heart rate drops during sleep and rises with any physical activity, even standing up.
Why Lower Is Generally Better
Within that 60 to 100 range, a lower resting heart rate usually signals a stronger, more efficient heart. When your heart muscle is well-conditioned, it pumps more blood with each beat, so it doesn’t need to beat as often to keep up with your body’s demands. Highly trained athletes can have resting heart rates as low as 40 bpm, which would be considered abnormally slow in a sedentary person but is perfectly healthy for them.
That said, a resting heart rate below 60 bpm in someone who isn’t particularly active is called bradycardia, and it can sometimes cause fatigue, dizziness, or fainting if the heart isn’t pumping enough blood. On the other end, a resting rate consistently above 100 bpm is called tachycardia. Both deserve a closer look if they come with symptoms.
Differences Between Men and Women
Women tend to have slightly faster resting heart rates than men. The main reason is size: the average adult female heart weighs roughly 230 to 280 grams, about 26% lighter than the average male heart at 280 to 340 grams. A smaller heart holds less blood per beat, so it compensates by beating more frequently to deliver the same amount of oxygen to the body. Women also tend to have a higher ejection fraction (the percentage of blood pushed out with each beat), but their overall cardiac output is still slightly lower. In practical terms, this means a resting heart rate of 80 bpm in a woman is completely unremarkable, even if her male partner sits at 68.
What Affects Your Heart Rate Day to Day
Your resting heart rate isn’t a fixed number. It shifts throughout the day and from one day to the next based on several factors:
Caffeine triggers the release of stress hormones that can temporarily raise your heart rate and blood pressure. Most people tolerate moderate amounts without issue, but if you’re prone to irregular heart rhythms, caffeine may push your rate noticeably higher.
Stress and anxiety activate the same fight-or-flight response, flooding your body with adrenaline. A stressful workday can easily push your resting rate 10 to 15 beats higher than your weekend baseline.
Temperature matters too. In hot weather or during a fever, your heart speeds up to help move blood toward the skin for cooling. Dehydration compounds this effect because lower blood volume forces the heart to work harder.
Medications can shift your rate in either direction. Beta-blockers lower it, while decongestants and some asthma medications can raise it. If you’ve noticed a change after starting a new prescription, that’s likely the explanation.
Sleep and fitness pull in the other direction over time. Regular aerobic exercise gradually lowers your resting rate, sometimes by 10 to 20 beats over several months. Consistent, quality sleep supports the same trend.
How to Check Your Heart Rate
The simplest method uses two fingers and a clock. Sit quietly for a few minutes first, then turn one hand palm-up and place the tips of your index and middle fingers on the inside of the opposite wrist, between the bone and the tendon on the thumb side. Press lightly until you feel each beat. Count the beats for 60 seconds, or count for 15 seconds and multiply by four.
You can also check the pulse on your neck by placing two fingertips in the groove beside your windpipe. Only press on one side at a time. Pressing both sides simultaneously can make you lightheaded or cause you to faint. Don’t press too hard at either location, since that can actually block blood flow and throw off your count.
Smartwatches and fitness trackers use optical sensors to estimate heart rate continuously, and most are reasonably accurate at rest. They’re useful for spotting trends over weeks and months, even if any single reading might be off by a few beats.
Heart Rate During Exercise
Your heart rate during a workout tells you how hard your cardiovascular system is working. The standard formula for estimating your maximum heart rate is simple: subtract your age from 220. A 40-year-old, for example, has an estimated max of 180 bpm.
From there, exercise intensity breaks into two broad zones. Moderate-intensity exercise (a brisk walk, casual cycling) corresponds to 50% to 70% of your max. For that 40-year-old, that’s roughly 90 to 126 bpm. Vigorous-intensity exercise (running, fast swimming) targets 70% to 85% of your max, or about 126 to 153 bpm. You don’t need to hit these numbers precisely. They’re guidelines for gauging effort, and the “talk test” works just as well: if you can speak in full sentences, you’re in the moderate zone; if you can only get out a few words at a time, you’re in the vigorous zone.
Signs Your Heart Rate May Be Abnormal
A heart rate that occasionally dips below 60 or spikes above 100 isn’t automatically a problem. Context matters. What does warrant attention is a resting heart rate outside the normal range that comes paired with symptoms: a fluttering or pounding sensation in your chest, dizziness, lightheadedness, unusual fatigue, shortness of breath, or episodes where you feel like you might faint.
Chest pain, difficulty breathing, or actual fainting alongside an unusual heart rate are more urgent. These can signal an arrhythmia, where the heart’s electrical signals misfire and cause it to beat too fast, too slow, or irregularly. Arrhythmias range from harmless (many people have occasional skipped beats) to serious, so the symptoms around the rate matter more than the number alone.