A normal resting heart rate for adults falls between 60 and 100 beats per minute (bpm). That range applies when you’re awake, calm, and sitting still. But “normal” shifts depending on your age, fitness level, whether you’re asleep, and whether you’re exercising. Here’s what to expect across each of those situations.
Resting Heart Rate for Adults
The 60 to 100 bpm window is the standard reference range used in clinical settings. Most healthy adults sit somewhere in the middle of that range, typically between 65 and 85 bpm. Where you land depends on several factors: your fitness level, body size, medications, stress, caffeine intake, whether you smoke, and how well you slept the night before. Even your posture matters. Standing up temporarily raises your heart rate compared to lying down.
A resting heart rate on the lower end of the range generally signals better cardiovascular fitness. Your heart pumps more blood per beat when it’s stronger, so it doesn’t need to beat as often to keep up. Well-trained endurance athletes can have resting heart rates around 40 bpm, which would be unusually low for someone who doesn’t exercise regularly but is perfectly healthy for them.
Certain medications also pull the number down. Blood pressure drugs known as beta-blockers work by blocking stress hormones that speed up the heart, which slows your resting rate and relaxes your blood vessels. If you take one, a heart rate in the 50s or even high 40s may be your new normal.
Heart Rate by Age in Children
Children’s hearts beat considerably faster than adults’, and the younger the child, the faster the rate. This is because smaller hearts hold less blood per beat and need to pump more frequently to circulate oxygen. Heart rate gradually decreases as a child grows, eventually reaching adult levels around age 10.
- Newborn to 3 months: 85 to 205 bpm while awake, 80 to 160 bpm while sleeping
- 3 months to 2 years: 100 to 190 bpm while awake, 75 to 160 bpm while sleeping
- 2 to 10 years: 60 to 140 bpm while awake, 60 to 90 bpm while sleeping
- Over 10 years: 60 to 100 bpm while awake, 50 to 90 bpm while sleeping
These ranges look wide because they account for normal variation between children at different activity levels and stages within each age bracket. A toddler running around at 180 bpm is not a concern, while the same number in a resting teenager would be.
Heart Rate During Sleep
Your heart rate drops while you sleep, typically running about 20% to 30% lower than your daytime resting rate. For most adults, that means a sleeping heart rate somewhere between 50 and 75 bpm. It doesn’t stay flat through the night, though. During deep sleep, your heart rate and blood pressure cycle down to their lowest points. During REM sleep (when dreaming occurs), your heart rate picks back up and can fluctuate more.
A sleeping heart rate anywhere between 40 and 100 bpm is generally considered within the normal window. If you use a fitness tracker or smartwatch, occasional dips into the low 40s during deep sleep are not unusual, especially if you’re physically active. Consistently seeing numbers above 100 or below 40 overnight is worth paying attention to.
Target Heart Rate During Exercise
During a workout, your target heart rate depends on how hard you’re pushing. The standard framework uses percentages of your maximum heart rate, which you can roughly estimate by subtracting your age from 220. So a 40-year-old has an estimated max of about 180 bpm.
For moderate-intensity exercise (brisk walking, casual cycling, light swimming), aim for 50% to 70% of your max. That same 40-year-old would target roughly 90 to 126 bpm. For vigorous exercise (running, high-intensity interval training, competitive sports), the target rises to 70% to 85% of max, or about 126 to 153 bpm for a 40-year-old.
These zones aren’t rigid rules. They’re guidelines to help you gauge effort, especially if perceived exertion is hard for you to judge. If you can carry on a conversation but feel slightly out of breath, you’re likely in the moderate zone. If you can only get out a few words between breaths, you’re in vigorous territory.
How Fast Your Heart Rate Should Recover
One of the most useful heart rate measurements isn’t your resting rate or your peak during exercise. It’s how quickly your heart rate drops once you stop. This is called heart rate recovery, and it reflects how well your cardiovascular system shifts gears from exertion to rest.
A good benchmark is a drop of 18 beats or more within the first minute after stopping exercise. If you finish a run at 160 bpm and you’re at 140 bpm or lower 60 seconds later, that’s a healthy recovery. A sluggish recovery, where your heart rate stays elevated and barely drops, can indicate lower cardiovascular fitness or, in some cases, an underlying heart issue. Improving your aerobic fitness over time typically improves recovery speed as well.
When a Heart Rate Falls Outside the Normal Range
A resting heart rate below 60 bpm is technically called bradycardia. In athletes or people on heart-slowing medications, this is expected and harmless. Population studies often use a lower cutoff of 50 bpm before flagging it as potentially concerning. The distinction matters: a fit person with a heart rate of 52 bpm and no symptoms is in a very different situation than someone at 48 bpm who feels dizzy, fatigued, or faint.
On the other end, a resting heart rate consistently above 100 bpm is called tachycardia. Temporary spikes above 100 are completely normal during exercise, stress, caffeine consumption, or illness (fevers raise your heart rate). The concern is when your resting rate stays elevated without an obvious trigger. Conditions like anemia, thyroid disorders, dehydration, and anxiety can all push resting heart rate higher.
The number alone doesn’t tell the whole story. A heart rate of 55 bpm with no symptoms is fine. A heart rate of 90 bpm with palpitations, chest tightness, or shortness of breath at rest is more meaningful, even though 90 falls within the “normal” range. Symptoms alongside the number are what matter most.
How to Check Your Heart Rate Accurately
The simplest method is placing two fingers (index and middle) on the inside of your wrist, just below the base of your thumb. Count the beats for 15 seconds and multiply by four. For a resting measurement, sit quietly for at least five minutes first. Checking right after standing up, drinking coffee, or climbing stairs will give you an artificially high number.
Wearable devices like smartwatches and fitness trackers use optical sensors to estimate heart rate continuously. They’re reasonably accurate for resting measurements and general trends, though they can be less reliable during high-intensity exercise, especially with wrist-based sensors. Chest strap monitors tend to be more precise during workouts if accuracy matters to you.
Tracking your resting heart rate over weeks and months is more useful than fixating on a single reading. A gradual downward trend usually signals improving fitness. A sudden, sustained increase of 10 or more bpm from your baseline, without changes in medication or activity level, can be an early signal of illness, overtraining, or stress that’s worth investigating.