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, and a handful of everyday factors like stress, caffeine, and sleep. The number that matters most is your resting heart rate, meaning the speed your heart beats when you’re sitting quietly and haven’t been exercising.
Normal Resting Heart Rate by Age
Adults and teenagers share the same general range of 60 to 100 bpm, but younger children have significantly faster hearts. A newborn’s resting heart rate can run anywhere from 100 to 205 bpm, which sounds alarmingly high by adult standards but is completely normal. As children grow, their hearts get larger and more efficient, so the rate gradually drops:
- 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
These numbers apply when a person is awake and at rest. Heart rate naturally dips lower during sleep and climbs higher during activity.
What a Lower Resting Heart Rate Means
Within that 60 to 100 range, lower is generally better. A resting heart rate in the 60s or low 70s typically signals that your heart pumps blood efficiently without working overtime. Highly trained endurance athletes often have resting heart rates well below 60 bpm, sometimes closer to 40. Their hearts have physically adapted to exercise: the heart muscle grows larger, contracts more forcefully, and fills with more blood between beats, so each pump delivers more oxygen to the body. Fewer beats accomplish the same job.
You don’t need to be an elite athlete to see this effect. Regular cardiovascular exercise over weeks and months can noticeably bring your resting heart rate down. The change happens partly because the branch of your nervous system responsible for calming the body becomes more active, keeping your baseline pulse lower throughout the day.
Too Fast or Too Slow
A resting heart rate above 100 bpm is clinically considered too fast, a condition called tachycardia. Below 60 bpm is technically classified as too slow (bradycardia), though in fit individuals this is normal and healthy rather than a concern. Context matters: a resting rate of 55 bpm in someone who runs regularly is a sign of fitness, while the same number in someone who feels dizzy or fatigued could point to a problem.
A persistently elevated resting heart rate, especially one that creeps above 100 without an obvious reason like exercise, fever, or anxiety, is worth paying attention to. The same goes for a heart that feels like it’s skipping beats, fluttering, or pounding. Chest pain, shortness of breath, or fainting alongside an unusual heart rate are emergencies that need immediate medical attention.
What Your Heart Rate Should Be During Exercise
Your resting rate tells you about your baseline health, but your heart rate during exercise tells you whether you’re working hard enough to build fitness. 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, target zones break down by intensity:
- Moderate intensity: 50% to 70% of your maximum heart rate. For that 40-year-old, this means 90 to 126 bpm. Think brisk walking, casual cycling, or a light swim. The American Heart Association recommends building up to about 2 hours and 30 minutes per week at this level.
- Vigorous intensity: 70% to 85% of your maximum. For the same person, that’s 126 to 153 bpm. Running, fast cycling, or high-intensity interval training fall here. About 1 hour and 15 minutes per week at this level provides comparable benefits to the longer moderate sessions.
The 220-minus-age formula is an estimate, not a personalized number. Individual variation is real, and some people will have a max that’s 10 to 15 beats higher or lower than the formula predicts. Still, it’s a useful starting point for gauging workout intensity without specialized equipment.
How to Check Your Heart Rate Accurately
The most reliable way to measure your resting heart rate is to sit quietly for a few minutes first. Don’t check right after climbing stairs, drinking coffee, or having an argument. Once you’re settled, you can find your pulse at two spots.
At your wrist: turn your palm face 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 a steady beat. Pressing too hard can actually compress the artery and make the pulse harder to detect.
At your neck: place two fingertips in the groove beside your windpipe on one side. Never press on both sides of your neck simultaneously, as this can make you lightheaded or faint. Again, use gentle pressure.
Count the beats for a full 60 seconds for the most accurate reading. A quicker method is to count for 15 seconds and multiply by four, though this amplifies any counting error. Smartwatches and fitness trackers offer continuous monitoring, which is convenient for spotting trends over time even if individual readings can be slightly off.
Factors That Shift Your Heart Rate
Your resting heart rate isn’t a fixed number. It fluctuates throughout the day and from one day to the next based on a variety of influences. Some of the most common ones:
Caffeine and stimulants temporarily raise your heart rate, which is why checking your pulse first thing in the morning before coffee gives you the most consistent baseline. Stress and anxiety activate your fight-or-flight response and push your rate up, sometimes significantly. Dehydration forces the heart to beat faster to maintain blood pressure when blood volume drops. Heat and high ambient temperatures increase heart rate as the body works to cool itself. Even noise exposure and air pollution have been linked to measurable changes in heart rate patterns.
Longer-term factors matter too. Alcohol use, carrying excess weight, chronic sleep deprivation, and certain medications can all raise your resting rate over time. On the flip side, consistent physical activity, adequate sleep, and maintaining a healthy weight tend to bring it down. Age also plays a role, though the 60 to 100 range holds across the adult lifespan.
The most useful thing you can do is track your resting heart rate over weeks rather than fixating on a single reading. A consistent trend upward or downward tells you more about your health than any individual number.