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. Where you land within that range depends on your age, fitness level, stress, and several other factors. A rate consistently outside that window is worth paying attention to.
Normal Resting Heart Rate by Age
The 60 to 100 bpm range applies to teenagers and adults, but younger children have naturally faster hearts. A newborn’s heart beats 100 to 205 times per minute, which sounds alarmingly fast but is completely normal for a body that small. As children grow, their resting rate gradually slows:
- Newborns (0 to 1 month): 100 to 205 bpm
- Infants (1 to 12 months): 80 to 160 bpm
- Toddlers (1 to 3 years): 80 to 130 bpm
- Preschoolers (3 to 5 years): 80 to 120 bpm
- School-age children (6 to 12 years): 75 to 118 bpm
- Teenagers and adults (13+): 60 to 100 bpm
By the teenage years, the heart has settled into the same range it will keep through adulthood and into older age. The range doesn’t shift for seniors, though other health conditions become more common and can push the rate higher or lower.
Why Some People Run Higher or Lower
Your resting heart rate is not a fixed number. It shifts throughout the day and from one week to the next based on what’s happening in your body. Some of the biggest influences:
Fitness level is the most dramatic factor. A well-trained heart pumps more blood with each beat, so it doesn’t need to beat as often. Very fit athletes can have resting rates close to 40 bpm, well below the standard range, and that’s perfectly healthy for them. If you start exercising regularly, you’ll likely see your resting rate drop over weeks and months.
Stress and emotions raise your heart rate by activating the same nervous system response that prepares your body for danger. Work pressure, anxiety, or even an argument can push your rate above your normal baseline. Chronic stress keeps it elevated more of the time.
Heat also speeds things up. When it’s hot, your body works harder to cool itself, increasing blood flow to the skin. That extra demand means a faster heart rate. You might notice your resting rate running a few beats higher on a summer day compared to a cool morning.
Caffeine, nicotine, and certain medications are stimulants that temporarily increase heart rate. Smoking in particular raises resting heart rate over the long term. Sleep quality matters too. Poor or disrupted sleep tends to keep your heart rate elevated even during waking hours.
What Your Resting Heart Rate Tells You
Within the normal range, lower is generally better. A resting rate on the lower end signals that your heart is efficient, pumping enough blood without working overtime. Think of it like a car engine: a powerful engine can cruise at low RPMs while a smaller one has to rev harder to keep up.
Tracking your resting heart rate over time can reveal trends you wouldn’t notice otherwise. A gradual decline usually reflects improving cardiovascular fitness. A sudden or sustained increase, with no obvious cause like illness or stress, can be an early signal that something has changed in your body. Many fitness trackers and smartwatches now measure resting heart rate automatically, making it easy to spot these shifts.
Too Fast or Too Slow
A resting heart rate above 100 bpm is called tachycardia. It can feel like a racing, pounding, or fluttering sensation in your chest, sometimes accompanied by lightheadedness, anxiety, or fatigue. Tachycardia has many possible causes, from dehydration and fever to thyroid problems and heart rhythm disorders. A rate that stays above 100 when you’re resting and calm deserves medical attention.
A resting rate below 60 bpm is called bradycardia. For athletes and physically active people, this is usually a sign of a strong, efficient heart. For everyone else, a rate that consistently dips below 60 can mean the heart isn’t pumping enough blood to meet the body’s needs. Symptoms include dizziness, unusual fatigue, and feeling faint.
Certain warning signs call for immediate help regardless of your rate: chest pain, shortness of breath, or fainting. These can indicate a serious rhythm problem where the heart’s electrical signals aren’t firing correctly.
How to Check Your Heart Rate
The simplest method uses two fingers and a clock. Place your index and middle fingers on the inside of your wrist, just below the base of your thumb. You should feel a pulse. Count the beats for 30 seconds, then multiply by two. That gives you your beats per minute.
For the most accurate reading, check first thing in the morning before you get out of bed, or after sitting quietly for at least five minutes. Your rate right after climbing stairs or drinking coffee won’t reflect your true resting baseline. Take a few readings on different days to get a reliable average, since a single measurement can be thrown off by a stressful morning or a poor night’s sleep.
Heart Rate During Exercise
Your heart rate during a workout should be much higher than at rest. The ceiling is your maximum heart rate, which decreases with age. A more accurate formula than the old “220 minus your age” rule, based on a large-scale analysis published in the Journal of the American College of Cardiology, is 208 minus 0.7 times your age. For a 45-year-old, that works out to roughly 177 bpm.
Moderate exercise typically puts you at 50% to 70% of your maximum. Vigorous exercise pushes you to 70% to 85%. Using the same 45-year-old example, moderate exercise would mean a heart rate of about 88 to 124 bpm, while vigorous exercise would land around 124 to 150 bpm. Staying within these zones helps you gauge whether you’re pushing hard enough to build fitness without overdoing it.