A normal resting heart rate for adults is 60 to 100 beats per minute (bpm). For children, the range depends heavily on age, starting much higher in newborns and gradually slowing as the heart grows. Below is a full breakdown of what’s normal at every stage of life, what factors shift your rate up or down, and how to measure yours accurately.
Normal Heart Rate for Children
Children’s hearts beat significantly faster than adult hearts because their hearts are smaller and need to pump more frequently to circulate blood. As a child grows, the heart becomes more efficient and the rate naturally drops. Here are the ranges from the U.S. Department of Health and Human Services, broken down by waking and sleeping states:
- Newborn to 3 months: 85 to 205 bpm awake, 80 to 160 bpm sleeping
- 3 months to 2 years: 100 to 190 bpm awake, 75 to 160 bpm sleeping
- 2 to 10 years: 60 to 140 bpm awake, 60 to 90 bpm sleeping
- Over 10 years: 60 to 100 bpm awake, 50 to 90 bpm sleeping
The wide ranges at younger ages are normal. A newborn’s heart rate can spike above 200 bpm during crying or feeding and drop below 100 during deep sleep. By around age 10, most children settle into the same 60 to 100 bpm range that adults use as a benchmark.
Normal Heart Rate for Adults
The standard resting heart rate for anyone 18 and older is 60 to 100 bpm. This range stays the same whether you’re 25 or 75. “Resting” means you’re sitting or lying down, awake, and haven’t been physically active for several minutes.
That said, where you fall within that range tells you something. Most healthy adults with moderate fitness sit between 60 and 80 bpm. A resting rate consistently at the higher end of the range, closer to 90 or 100, can sometimes reflect deconditioning, stress, dehydration, or other factors worth paying attention to. A rate below 60 bpm is technically classified as bradycardia, and above 100 bpm is considered tachycardia, though neither label automatically means something is wrong.
Why Athletes Have Lower Heart Rates
If you exercise regularly, your resting heart rate is likely lower than 60 bpm, and that’s perfectly healthy. Trained athletes commonly have resting rates in the 40s or 50s. Their heart muscle is stronger and more efficient, pumping more blood with each beat so it doesn’t need to beat as often. This is one of the clearest measurable benefits of cardiovascular fitness.
Interestingly, being sedentary doesn’t push your resting heart rate much higher than average. The effect is asymmetric: regular intense exercise can lower your rate by 10 to 20 bpm or more, but a lack of exercise only nudges it slightly upward within the normal range.
Differences Between Men and Women
Women tend to have a resting heart rate about 5 to 10 bpm higher than men. The reason is structural. The female heart generally has a smaller chamber size and pumps less blood per beat, so it compensates by beating more frequently to maintain the same overall blood flow. A woman with a resting rate of 78 and a man with a resting rate of 70 could be equally healthy. Both are well within the normal range, and the gap between them is expected.
Factors That Change Your Heart Rate
Your heart rate at any given moment reflects far more than fitness or age. It responds to nearly everything happening in and around your body. Some of the most common influences:
Caffeine and stimulants speed up the heart by activating your body’s alert system. Even a single cup of coffee can raise your rate by several beats per minute. Stimulant medications used for attention disorders have a similar effect, directly increasing body temperature and heart rate.
Temperature matters more than most people realize. In hot environments, your heart works harder to push blood toward the skin’s surface for cooling. If you’re on certain common medications, including blood pressure drugs and some antidepressants, your body’s cooling mechanisms may be impaired, forcing the heart to compensate even more.
Emotions and stress trigger a rapid rise in heart rate through the same fight-or-flight hormones that prepare your body for physical danger. Anxiety, excitement, and even a startling noise can temporarily push your rate above 100 bpm.
Body position plays a role too. Your heart rate is typically lowest when lying flat and increases slightly when you sit up or stand, because gravity requires more pumping effort to move blood upward to the brain.
Dehydration reduces blood volume, meaning the heart must beat faster to deliver the same amount of oxygen. Even mild dehydration from skipping water on a warm day can noticeably increase your rate.
Alcohol increases both sweating and urination, which compound dehydration. It also impairs your body’s ability to sense heat, creating a situation where your heart rate rises without you feeling the usual warning signs.
Your Maximum Heart Rate
Your maximum heart rate is the fastest your heart can safely beat during intense exercise. The standard formula, published by MedlinePlus, is simple: subtract your age from 220. A 40-year-old has an estimated maximum of 180 bpm. A 60-year-old, about 160 bpm.
This formula gives a rough estimate, not a precise ceiling. Individual variation is significant, and some people naturally peak 10 to 15 bpm above or below the predicted number. Still, it’s useful for setting exercise intensity targets. Most guidelines recommend working out at 50 to 85 percent of your maximum heart rate for cardiovascular benefit, which for that 40-year-old would be roughly 90 to 153 bpm.
How to Measure Your Resting Heart Rate
The best time to check is first thing in the morning, before you get out of bed, drink coffee, or check stressful emails. You want your body as close to baseline as possible.
Place two fingers (index and middle) on the inside of your wrist, just below the base of your thumb, or on the side of your neck just below the jawline. Once you feel a steady pulse, count the beats for 15 seconds and multiply by four. For slightly better accuracy, count for 30 seconds and multiply by two. That number is your resting heart rate.
Checking over several mornings gives you a more reliable picture than a single reading. Day-to-day variation of 5 to 10 bpm is completely normal. What matters more is the trend over weeks and months. A gradual decrease often reflects improving fitness, while a sustained increase without an obvious cause is worth noting.
When Your Heart Rate Signals a Problem
A resting heart rate below 60 or above 100 isn’t automatically dangerous. Athletes live comfortably in the 40s, and a rate of 105 after a stressful morning doesn’t mean anything is wrong. Context matters.
What does warrant attention is a heart rate that falls below 35 to 40 bpm or rises above 100 bpm while you’re at rest, especially if it comes with symptoms like palpitations (a fluttering or pounding sensation in your chest), shortness of breath, dizziness, or chest pain. Those combinations can indicate an electrical or structural issue with the heart that needs evaluation.