A normal resting pulse for adults falls between 60 and 100 beats per minute (bpm). That range covers most healthy people sitting quietly, but your ideal number within it depends on your age, fitness level, and several other factors. A well-trained athlete might sit comfortably at 40 to 50 bpm, while a newborn’s heart races at up to 205 bpm and that’s perfectly healthy for them.
Normal Resting Pulse by Age
Heart rate norms shift dramatically from birth through adulthood. Babies need a much faster pulse because their hearts are small and pump less blood with each beat. As the heart grows, the rate gradually slows.
- Newborn to 3 months: 85 to 205 bpm awake, 80 to 160 bpm asleep
- 3 months to 2 years: 100 to 190 bpm awake, 75 to 160 bpm asleep
- 2 to 10 years: 60 to 140 bpm awake, 60 to 90 bpm asleep
- Over 10 years and adults: 60 to 100 bpm awake, 50 to 90 bpm asleep
Children’s heart rates can look alarmingly high to a parent who’s used to adult numbers. A toddler clocking 160 bpm during a tantrum is within the expected window. By around age 10, most kids settle into the same 60 to 100 bpm adult range.
What a Lower Resting Pulse Means
If you exercise regularly, your resting heart rate will likely land on the lower end of the range, and that’s a good sign. Consistent aerobic exercise makes the heart muscle stronger so it pumps more blood with each beat and doesn’t need to beat as often. Exercise also increases the activity of the vagus nerve, which acts as a natural brake on heart rate, and slows the heart’s built-in pacemaker cells. Elite endurance athletes commonly rest at 40 to 50 bpm, and some go even lower during sleep.
A resting pulse below 60 bpm in someone who isn’t particularly active is a different situation. Clinically, anything under 60 bpm is considered bradycardia. It doesn’t always cause problems, but if you feel dizzy, unusually tired, or short of breath alongside a low pulse, it’s worth getting checked out.
When a High Resting Pulse Is a Concern
A resting heart rate consistently above 100 bpm is classified as tachycardia. Short bursts above 100 are normal during stress, exercise, or after caffeine, but a chronically elevated resting rate carries real health risks. A large 16-year study of men in Copenhagen found that each 10 bpm increase in resting heart rate was linked to a 16% higher risk of dying from any cause. Men resting between 81 and 90 bpm had roughly double the mortality risk compared to those under 50 bpm, and rates above 90 bpm tripled it.
That doesn’t mean a single reading of 85 bpm is dangerous. It means that your resting heart rate over time is a meaningful indicator of cardiovascular fitness. Bringing it down through regular exercise is one of the most straightforward things you can do for long-term heart health.
Factors That Change Your Pulse
Your resting heart rate isn’t a fixed number. It fluctuates throughout the day and across seasons based on dozens of variables. The major ones include:
- Stress and emotions: Anxiety, anger, and excitement all activate your sympathetic nervous system, pushing your pulse up.
- Caffeine and stimulants: Coffee, energy drinks, and certain medications temporarily raise heart rate.
- Heat: High temperatures increase sympathetic nervous system activity, which speeds the heart. Your body is working harder to cool itself.
- Alcohol: Regular heavy drinking is associated with a faster resting heart rate over time.
- Sleep and time of day: Your pulse naturally dips during sleep, often 10 to 20 bpm below your daytime resting rate.
- Body weight: Carrying excess weight forces the heart to work harder at rest, which tends to raise the baseline rate.
- Medications: Beta-blockers lower heart rate. Decongestants, some asthma medications, and thyroid drugs can raise it.
Interestingly, long-term cold exposure doesn’t appear to have a lasting effect on heart rate. The body adapts within about 60 days, returning to its baseline. Noise pollution and shift work, on the other hand, have been shown to affect heart rate variability in ways that suggest chronic stress on the cardiovascular system.
Heart Rate During Pregnancy
Pregnancy creates a predictable rise in resting heart rate that starts in the first trimester and peaks in the third. Harvard research tracking women with wearable devices found a median resting pulse of about 65.5 bpm before pregnancy, climbing to 77 bpm around eight weeks before delivery. That’s roughly a 20% to 25% increase, or 10 to 20 extra beats per minute. Walking heart rate followed the same pattern, rising from about 101.5 bpm before pregnancy to 109.5 bpm in the third trimester. This is the body’s normal response to increased blood volume and the demands of supporting fetal growth.
Your Pulse During Exercise
During a workout, you want your heart rate elevated, but how high depends on your goals. The standard formula for estimating your maximum heart rate is: 208 minus (0.7 times your age). So a 40-year-old would have an estimated max of about 180 bpm.
From there, exercise intensity breaks down into two main zones:
- Moderate intensity: 50% to 70% of your maximum heart rate. For a 40-year-old, that’s roughly 90 to 126 bpm. Think brisk walking, easy cycling, or casual swimming.
- Vigorous intensity: 70% to 85% of your maximum. For the same person, about 126 to 153 bpm. This covers running, fast cycling, and high-intensity interval training.
These are guidelines, not hard boundaries. If you’re on medications that affect heart rate, or if you have a heart condition, these formulas may not apply cleanly. Perceived effort, whether you can carry on a conversation, remains a useful backup gauge.
How to Check Your Pulse Accurately
You can measure your pulse at two easy-to-find spots: your wrist and your neck. For the most accurate resting reading, sit quietly for a few minutes before starting.
To check at the wrist, turn your palm face up. Place the tips of your index and middle fingers (not your thumb, which has its own pulse) on the inside of your wrist, between the bone and the tendon on the thumb side. Press lightly until you feel each beat. Count for a full 60 seconds, or count for 15 seconds and multiply by four.
To check at the neck, place two fingertips in the groove next to your windpipe on one side. Again, press gently. Pushing too hard can actually slow the heart rate by compressing the artery, giving you a falsely low number.
For ongoing tracking, a wrist-based heart rate monitor or smartwatch provides continuous data and can reveal trends over weeks and months that a single manual check would miss. The most useful number to track is your resting heart rate first thing in the morning, before you get out of bed. This gives you the most consistent baseline and is the number most closely linked to cardiovascular fitness over time.