You can get your heart rate in under a minute using nothing but two fingers and a clock. Place your index and middle fingers on the inside of your wrist, just below the base of your thumb, and count the beats you feel. A normal resting heart rate for adults falls between 60 and 100 beats per minute, though well-trained athletes often sit in the 40s or 50s.
Finding Your Pulse by Hand
Two spots on your body give the clearest pulse. The first is your radial artery, located on the thumb side of your inner wrist, right above the wrist joint. Press your index and middle fingers gently against the bone there until you feel a steady throb. The second is your carotid artery on your neck. Find it by placing those same two fingers at the midpoint between your earlobe and chin, just to the side of your windpipe.
Never use your thumb to check a pulse. Your thumb has its own pulse, which can mix with the one you’re trying to measure and throw off your count. Keep your pressure light, especially on the neck. Pressing too hard on the carotid artery can slow your heart rate reflexively and give you a falsely low number.
Counting the Beats
Heart rate is expressed as beats per minute (bpm). The most accurate manual method is counting beats for a full 60 seconds, but most people use a shortcut: count for 15 seconds and multiply by four, or count for 30 seconds and multiply by two. The shorter the counting window, the more any small miscount gets amplified. If you count one extra beat in a 15-second window, your final number is off by four. Over 60 seconds, that same error is just one beat off.
For a quick check during exercise, the 15-second method works fine. If you’re tracking your resting heart rate over time to spot trends, count for the full minute.
Using a Smartwatch or Fitness Tracker
Wrist-worn devices use small LED lights that shine into your skin and measure changes in blood flow. At rest, they’re reasonably close to clinical-grade monitors, typically within about 5 beats per minute for people with a normal heart rhythm. During intense exercise, accuracy drops. A study published in the Journal of the American College of Cardiology found that at peak exercise, wearable devices were off by an average of nearly 14 bpm in people with normal rhythms. In over 60% of readings, the devices underestimated the true heart rate rather than overestimating it.
For people with irregular heart rhythms like atrial fibrillation, the gap widens considerably. At peak exercise, devices were off by roughly 29 bpm on average. If you have a known heart rhythm condition, a chest-strap monitor will give you more reliable numbers than an optical wrist sensor.
To get the best reading from a wrist device, wear it snug (not tight) about one finger-width above your wrist bone. Loose bands let light leak in and degrade the signal. Cold weather can also reduce accuracy because blood flow to your wrists drops when your body is trying to conserve heat.
When and How to Check Resting Heart Rate
Your resting heart rate is most consistent first thing in the morning, before you get out of bed. Sit or lie still for a few minutes, then take your measurement. Caffeine, stress, dehydration, and even a full bladder can bump the number up, so consistency matters more than any single reading. Check it at the same time, in the same position, a few days in a row to get a reliable baseline.
Children have naturally faster resting rates than adults. Newborns range from 100 to 205 bpm, toddlers from 98 to 140, and school-age kids from 75 to 118. By the teenage years, the range settles into the adult norm of 60 to 100 bpm.
Calculating Your Target Heart Rate During Exercise
To figure out how hard to push during a workout, you first need an estimate of your maximum heart rate. The classic formula is 220 minus your age. A 40-year-old, for example, would estimate a max of 180 bpm. Research from Michigan State University’s Women’s Health Research Institute suggests women get a more accurate estimate using a different formula: 206 minus 88% of age. For a 40-year-old woman, that works out to about 171 bpm instead of 180.
Once you have your estimated max, target heart rate zones are straightforward. Moderate-intensity exercise (a brisk walk, easy cycling) puts you at roughly 65% to 75% of your max. Vigorous exercise (running, high-intensity intervals) pushes you to 75% to 85%. For that same 40-year-old man with a max of 180, moderate intensity means keeping his heart rate between about 117 and 135 bpm.
What Your Recovery Heart Rate Tells You
One of the most useful numbers you can track is how quickly your heart rate drops after you stop exercising. This is called heart rate recovery, and it reflects how efficiently your cardiovascular system shifts from work mode back to rest. To measure it, note your heart rate at the moment you stop exercising, then check again after exactly one minute of standing or sitting still. The difference between those two numbers is your one-minute heart rate recovery.
A drop of 18 beats or more in that first minute is considered a good benchmark, according to Cleveland Clinic. A smaller drop may signal that your cardiovascular fitness has room to improve, or it can be worth mentioning to a doctor if it persists alongside other symptoms like unusual fatigue. As your fitness improves over weeks and months, you should see this number climb.
Medications That Change the Numbers
Certain medications will shift your baseline heart rate and change what “normal” looks like for you. Beta-blockers, commonly prescribed for high blood pressure and heart conditions, work by blocking the hormones that speed up your heart. If you take one, your resting heart rate may sit well below 60 bpm, and your heart rate during exercise will be noticeably lower than the standard formulas predict. On the other side, stimulant medications, decongestants, and some asthma inhalers can push your resting rate higher. If you’re on any of these, the target heart rate zones calculated from age-based formulas won’t apply cleanly. A perceived-exertion approach, rating how hard the exercise feels on a scale of 1 to 10, is more practical.
Heart Rates Worth Paying Attention To
A resting heart rate consistently above 100 bpm when you’re calm and at rest is called tachycardia, and it’s worth investigating. A rate that stays below 60 bpm is called bradycardia, which is perfectly normal for fit people but can be a concern if it comes with dizziness, confusion, fainting, chest pain, or shortness of breath. A resting rate that drops below 40 bpm (when that isn’t your usual baseline) is a reason to seek immediate medical attention, as it can mean your brain isn’t getting enough oxygen.
Occasional spikes or dips are normal, especially after caffeine, during illness, or after a stressful day. The pattern over time matters more than any single reading. If you notice your resting heart rate trending steadily upward over several weeks without an obvious explanation like reduced sleep or increased stress, that’s useful information to share with a healthcare provider.