A normal resting heart rate for adults falls between 60 and 100 beats per minute (bpm). That range applies when you’re sitting quietly or lying down, not during or right after physical activity. Where you land within that window depends on your age, fitness level, medications, and several other factors worth understanding.
Normal Ranges by Age
Heart rate slows steadily as you grow from infancy into adulthood. A newborn’s heart beats remarkably fast because the heart is small and needs to pump more frequently to circulate blood. Here’s what the ranges look like across age groups while awake:
- Newborn to 3 months: 85 to 205 bpm
- 3 months to 2 years: 100 to 190 bpm
- 2 to 10 years: 60 to 140 bpm
- Over 10 years and adults: 60 to 100 bpm
During sleep, heart rates drop across all age groups. A sleeping child between 2 and 10, for example, typically falls between 60 and 90 bpm. Adults and older children often dip into the 50s during deep sleep, which is completely normal.
What Counts as Too Fast or Too Slow
A resting heart rate above 100 bpm is called tachycardia. Below 60 bpm is called bradycardia. Neither number is automatically dangerous on its own. Plenty of healthy, physically fit people sit comfortably in the 50s or even high 40s at rest. Endurance athletes, in particular, often have resting rates well below 60 because their hearts pump more blood with each beat, so fewer beats are needed per minute.
On the other end, a rate above 100 while you’re resting could simply mean you just had coffee, you’re anxious, or you’re fighting off a cold. It becomes a concern when it happens repeatedly without an obvious trigger, or when it comes with symptoms like chest pain, dizziness, shortness of breath, or fainting.
Factors That Shift Your Heart Rate
Your resting heart rate isn’t a fixed number. It fluctuates throughout the day and across weeks depending on what’s happening in your body. Age, sex, height, weight, physical fitness, and overall health all play a role in your baseline. Beyond those, several everyday factors push the number up or down.
Things that raise your resting heart rate include caffeine, nicotine, sugar, stress, depression, and illness like a cold or the flu. Cigarette smoking, in particular, is consistently linked to elevated resting rates. Certain medications also speed the heart up, including stimulant drugs used for ADHD and some antidepressants.
On the flip side, medications like beta-blockers and calcium channel blockers (commonly prescribed for high blood pressure) slow the heart down. Regular aerobic exercise lowers resting heart rate over time by strengthening the heart muscle so it works more efficiently.
Heart Rate During Exercise
When you’re active, your heart rate should climb well above that resting range. Your estimated maximum heart rate is roughly 220 minus your age. So a 40-year-old has a maximum of about 180 bpm.
For moderate-intensity exercise (brisk walking, casual cycling), you want to be at about 50 to 70 percent of your maximum. For vigorous exercise (running, intense swimming), aim for 70 to 85 percent. Using the same 40-year-old example, moderate exercise would target 90 to 126 bpm, while vigorous exercise would target 126 to 153 bpm. These zones help you gauge whether you’re pushing hard enough to get cardiovascular benefit without overdoing it.
How to Check Your Pulse
To get an accurate resting heart rate, sit down and rest quietly for a few minutes before measuring. You can check at two spots: your wrist or the side of your neck.
For your wrist, turn one hand palm-up and place the tips of your index and middle fingers on the thumb side, in the groove between the wrist bone and the tendon. Press lightly until you feel each beat. For your neck, place those same two fingertips in the groove next to your windpipe on one side. Don’t press on both sides at the same time, as this can make you feel dizzy or faint.
Count the beats for a full 60 seconds for the most accurate result. A quicker method is to count for 15 seconds and multiply by four. Wearable devices and smartwatches also track heart rate continuously, though they can be slightly less accurate than a manual count, especially during movement.
Signs Your Heart Rate Needs Attention
A heart rate outside the 60 to 100 range isn’t always a problem, but certain accompanying symptoms suggest something worth investigating. If you regularly feel like your heart is beating too fast, too slow, or skipping beats, that pattern is worth bringing up at a checkup. Chest pain, shortness of breath, or fainting alongside an unusual heart rate are more urgent and warrant immediate medical attention.
Tracking your resting heart rate over time gives you a useful personal baseline. A sudden, sustained change of 10 or more bpm without an obvious explanation (new medication, illness, major stress) is more meaningful than any single reading on a given day.