A normal resting heart rate for adults falls between 60 and 100 beats per minute (BPM). That number applies when you’re awake, calm, and sitting still. Your actual rate at any given moment depends on your age, fitness level, what you’ve been doing, and whether you’re asleep or awake.
Resting Heart Rate for Adults
The 60 to 100 BPM range is the standard benchmark used across medicine. Most healthy adults land somewhere in the middle of that window. A rate consistently at the lower end often signals good cardiovascular fitness, because a stronger heart pumps more blood per beat and doesn’t need to work as hard at rest.
Well-trained endurance athletes can have resting rates closer to 40 BPM, which sounds alarmingly low but is perfectly healthy in that context. Their hearts have adapted to sustained exercise by growing slightly larger and more efficient. If you’re not an athlete and your resting rate regularly dips below 60, or if it consistently sits above 100, those are worth paying attention to (more on that below).
Normal Heart Rate by Age in Children
Children’s hearts beat significantly faster than adults’, and the younger the child, the faster the rate. Here’s what’s considered normal 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: 60 to 100 BPM (same as adults)
During sleep, children’s rates drop. A sleeping newborn typically falls between 80 and 160 BPM, while a sleeping child over age 2 can run between 60 and 90 BPM. These wide ranges reflect the fact that a toddler crying versus a toddler napping will produce very different readings, and both can be completely normal.
What Happens to Your Heart Rate During Sleep
When you fall asleep, your body shifts into a lower gear. Blood pressure drops, breathing slows, and your heart rate follows. An average adult sleeping heart rate sits between 40 and 60 BPM, according to Mass General Brigham. That dip is a sign your nervous system is doing its job, switching from the alert, daytime mode to a rest-and-repair state.
Your rate doesn’t stay flat through the night, though. During dream-heavy sleep stages, it can spike, especially during vivid or stressful dreams. A nightmare can push your heart rate up temporarily, which is normal. What isn’t ideal is a pattern of repeated drops and surges through the night, which can happen with conditions like sleep apnea, where breathing repeatedly stops and restarts.
Heart Rate During Exercise
Your heart rate is supposed to climb during physical activity. The question is how high it should go. The standard formula for estimating your maximum heart rate is simple: 220 minus your age. A 40-year-old, for example, has an estimated maximum of about 180 BPM.
From there, the American Heart Association defines two key zones. Moderate-intensity exercise (brisk walking, easy cycling) should put you at 50 to 70% of your maximum. Vigorous exercise (running, competitive sports) pushes you to 70 to 85%. For that same 40-year-old, moderate activity means a heart rate of roughly 90 to 126 BPM, while vigorous activity means 126 to 153 BPM.
These zones aren’t strict boundaries. They’re guides for gauging effort. If you’re new to exercise, staying in the moderate zone builds a base of fitness without overloading your cardiovascular system. If you’ve been active for a while, spending time in the vigorous zone improves endurance and heart efficiency over time.
What Affects Your Resting Rate
Your heart rate isn’t a fixed number. It shifts throughout the day based on a variety of factors. Stress and anxiety trigger your body’s fight-or-flight response, releasing hormones that speed up your heart. Dehydration reduces blood volume, forcing your heart to beat faster to circulate the same amount of oxygen. Hot weather has a similar effect, as your body works harder to cool itself. Illness and fever reliably raise your rate, sometimes by 10 or more BPM per degree of temperature increase.
Medications play a role too. Some cold medicines and asthma inhalers contain stimulants that push your rate up, while blood pressure medications are specifically designed to bring it down. Body position matters as well. Standing up quickly can cause a brief spike as your cardiovascular system adjusts to the change in gravity. Even emotions like excitement or surprise can produce a momentary jump.
Caffeine is commonly assumed to raise heart rate, but the evidence is more nuanced. In one study published in the Journal of Applied Physiology, trained cyclists given a moderate dose of caffeine showed no significant change in heart rate compared to a placebo group, either at rest or during exercise. For most people, a cup or two of coffee won’t meaningfully alter your resting rate, though individual sensitivity varies.
When Heart Rate Falls Outside Normal
Clinically, a resting heart rate below 60 BPM is called bradycardia, and a rate above 100 BPM is called tachycardia. But hitting either of those numbers doesn’t automatically mean something is wrong. Context matters enormously.
Bradycardia in a fit, healthy person with no symptoms is usually just a sign of an efficient heart. It becomes a concern when it’s paired with dizziness, fainting, unusual fatigue, or shortness of breath. Those symptoms suggest the heart isn’t pumping enough blood to meet the body’s needs.
Tachycardia at rest is more commonly a red flag, especially if it comes on suddenly or feels like a fluttering or pounding sensation in your chest. A sustained resting rate above 100 can result from dehydration, anxiety, thyroid problems, anemia, or heart rhythm disorders. Rates that spike above 120 BPM at rest without an obvious cause (like exercise or a fright) may point to a more specific type of abnormal rhythm that needs evaluation.
How to Check Your Heart Rate
The simplest method is a manual pulse check at your wrist. Turn one hand palm-up, then place the middle three fingers of your other hand on the inner wrist, just below the base of your thumb. Press firmly until you feel a steady pulsing sensation. Count the beats for 30 seconds and multiply by two, or count for 10 seconds and multiply by six. Either method gives you your BPM.
If you can’t find a pulse at your wrist, try your neck. Place your index and middle fingers in the groove beside your windpipe, just under your jawline, and press until you feel the beat. The neck pulse is often stronger and easier to detect, especially during exercise.
For the most accurate resting reading, check your pulse first thing in the morning before getting out of bed, or after sitting quietly for at least five minutes. A single reading is just a snapshot. Tracking your resting rate over several days gives you a more reliable baseline, and a consistent upward trend over weeks can sometimes signal stress, overtraining, or the early stages of illness before other symptoms appear.