A normal resting heart rate for adults falls between 60 and 100 beats per minute (bpm). That range applies whether you’re 18 or 80, though where you land within it depends on your fitness level, stress, medications, and other everyday factors. Below that range, above it, or during exercise, different numbers apply.
Normal Resting Heart Rate by Age
Hearts beat much faster in early life and gradually slow as you grow. Here are the typical resting ranges when awake and not exercising:
- 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
- Adult (18 and older): 60 to 100 bpm
These numbers drop during sleep and climb during physical activity. They also shift slightly from one reading to the next, so a single measurement isn’t the whole picture.
What a Lower Resting Rate Means
If you exercise regularly, your resting heart rate will often sit in the lower part of that 60 to 100 range, or even below it. Very fit people typically have a resting rate between 40 and 50 bpm. That’s because a trained heart pumps more blood with each beat, so it doesn’t need to beat as often to keep up with your body’s demands.
A heart rate below 60 bpm isn’t automatically a problem. In someone who’s physically active and feels fine, it’s a sign of cardiovascular efficiency. But if your rate drops below 60 and you’re experiencing dizziness, fatigue, or fainting, that pattern (called bradycardia) may signal an electrical issue in the heart that needs evaluation.
When Your Heart Rate Is Too High
A resting heart rate consistently above 100 bpm is called tachycardia. It can be triggered by temporary factors like caffeine, stress, dehydration, or illness. Some medications, including certain asthma drugs and decongestants, can also push it higher. In these cases, the rate usually returns to normal once the trigger passes.
Persistent tachycardia without an obvious cause is worth investigating. It can strain the heart over time because the muscle never fully relaxes between beats. Pay attention to accompanying symptoms: chest pain, sudden collapse, loss of consciousness, lightheadedness, or the sensation of your heart racing unexpectedly all point to something that needs prompt medical attention.
Your Target Heart Rate During Exercise
During a workout, you want your heart rate elevated, but within a range that matches your goals. The American Heart Association breaks it into two zones:
- Moderate intensity: 50% to 70% of your maximum heart rate. This is a brisk walk, easy bike ride, or casual swim. You can hold a conversation but you’re breathing harder than normal.
- Vigorous intensity: 70% to 85% of your maximum heart rate. Think running, fast cycling, or high-intensity interval training. Talking in full sentences becomes difficult.
To use these zones, you first need your estimated maximum heart rate. The classic formula is 220 minus your age, but research published in the Journal of the American College of Cardiology found a more accurate version: 208 minus (0.7 times your age). The older formula tends to underestimate maximum heart rate in people over 40, which means it can also underestimate how hard you should be working during exercise.
A Quick Example
If you’re 45 years old, the updated formula gives you a maximum of about 177 bpm (208 minus 31.5). Your moderate-intensity zone would be roughly 89 to 124 bpm, and your vigorous zone would be about 124 to 150 bpm. These are estimates. Individual variation is real, so use the numbers as a starting guide rather than a hard ceiling.
What Affects Your Heart Rate Day to Day
Your resting heart rate isn’t static. It fluctuates based on what’s happening in your body and environment. Some common influences:
Caffeine is a stimulant that can temporarily increase heart rate in some people, though regular coffee drinkers often develop a tolerance that blunts this effect. The impact can last several hours depending on how quickly your body breaks caffeine down, which varies based on genetics, certain medications, and even whether you smoke (smoking speeds caffeine metabolism).
Stress and anxiety activate your fight-or-flight response, releasing hormones that speed up the heart. Chronic stress can keep your resting rate elevated over weeks or months, which is one reason people sometimes notice their resting heart rate drops after starting a meditation or exercise habit.
Temperature matters too. Heat and humidity force your heart to work harder to cool your body, which can add 5 to 10 bpm to your normal rate. Dehydration compounds this effect.
Sleep and body position both lower heart rate. You’ll typically see your lowest readings first thing in the morning while still lying down. Standing up immediately adds a few beats per minute as your heart adjusts to gravity pulling blood toward your legs.
How to Check Your Heart Rate Accurately
The simplest method uses two fingers and a clock. Sit quietly for a few minutes first, since any recent movement will inflate the number. Then place the tips of your index and middle fingers on the inside of your wrist, on the thumb side, between the bone and the tendon. Press lightly until you feel each beat. Count the beats for 60 seconds. You can also count for 15 seconds and multiply by four, though the full minute gives a more accurate result.
If you can’t find your wrist pulse easily, try the side of your neck instead. Place those same two fingertips in the groove next to your windpipe. Only press on one side at a time, and use light pressure. Pressing too hard on both sides or pushing too firmly can actually slow the pulse you’re trying to measure.
Wearable devices like smartwatches and fitness trackers use optical sensors to estimate heart rate continuously. They’re convenient for tracking trends over time, but can be less accurate during intense movement or if the band isn’t snug. For a reliable resting measurement, a manual check first thing in the morning is hard to beat.
Tracking Trends Over Time
A single heart rate reading tells you less than a pattern does. Checking your resting heart rate at the same time each day, ideally right after waking, gives you a baseline you can watch over weeks. A gradual downward trend usually reflects improving fitness. A sudden increase of 5 to 10 bpm above your norm, especially if sustained for several days, can signal overtraining, the early stages of an illness, or increased stress.
Where you fall within the 60 to 100 range matters less than whether your number is stable and you feel well. Someone with a consistent resting rate of 85 bpm who exercises regularly, sleeps well, and has no symptoms is in a different situation than someone whose rate recently jumped from 70 to 85 with no clear explanation. Context is everything.