A pulse is the rhythmic expansion and contraction of your arteries each time your heart pumps blood. When you press your fingers against your wrist or neck and feel that steady beat, you’re not actually feeling your heart itself. You’re feeling your artery walls briefly widening as a wave of blood passes through, then narrowing again until the next beat arrives.
How a Pulse Is Created
Each time your heart squeezes, it pushes blood into the aorta, your body’s largest artery. That burst of blood creates a pressure wave that travels outward through the entire network of arteries, much like a ripple moving through a garden hose when you turn the faucet on. The wave causes artery walls to stretch slightly as it passes, then spring back. This stretch-and-recoil is what you feel as a pulse.
The pressure wave doesn’t just travel in one direction. When it reaches points where arteries branch or narrow, part of the wave bounces back toward the heart. The interaction between the outgoing wave and these reflected waves shapes the overall pressure pattern in your arteries, which is why pulse characteristics can vary between different locations on your body.
Pulse vs. Heart Rate
People use “pulse” and “heart rate” interchangeably, but they measure two different things. Your heart rate is the number of times your heart squeezes per minute, driven by electrical signals. Your pulse is the number of times your arteries expand in response to those squeezes. Most of the time, the two numbers match. But in certain heart rhythm disorders, the heart may fire without producing a strong enough beat to reach your wrist, so your pulse count can come in lower than your actual heart rate.
Unless a device uses EKG technology to detect electrical impulses, it’s reading pressure changes in your arteries rather than your heart’s electrical activity. Fitness trackers and pulse oximeters, for example, measure your pulse, not your heart rate directly.
Normal Resting Pulse by Age
A healthy resting pulse varies significantly depending on how old you are. Newborns have dramatically faster pulses than adults because their hearts are smaller and need to beat more frequently to circulate enough blood.
- 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 and adult (13+): 60 to 100 bpm
These ranges apply when you’re awake and at rest. Your pulse naturally drops during sleep and rises during physical activity. Highly trained athletes often have resting pulses well below the standard adult range, sometimes closer to 40 bpm, because their hearts pump more blood per beat and don’t need to contract as frequently.
What Affects Your Pulse
Your pulse isn’t a fixed number. It shifts throughout the day in response to what your body is doing and experiencing. Exercise is the most obvious factor: your muscles need more oxygen, so your heart beats faster to deliver it. But plenty of other things move the needle too.
Caffeine and other stimulants speed up your pulse by triggering your body’s alert system. Stress, anxiety, and acute pain do the same thing through your fight-or-flight response, which floods the body with hormones that make the heart beat harder and faster. Body temperature matters as well. A fever raises your pulse because your metabolism is running hotter, while hypothermia slows it down as metabolic demands drop. Even your body position plays a role: standing up from a seated position causes a brief pulse increase as your cardiovascular system adjusts to gravity.
Where and How to Check Your Pulse
Your body has eight common arterial pulse points, but the two easiest to find are the radial pulse on the inside of your wrist (just below the base of your thumb) and the carotid pulse on either side of your neck. To check it manually, place your index and middle fingers (not your thumb, which has its own pulse) over the artery and press gently until you feel the beat. Count the beats for 30 seconds and multiply by two, or count for a full 60 seconds for a more accurate reading.
Healthcare providers sometimes listen to your apical pulse, which is the sound of your heart beating at the chest wall, using a stethoscope. This method captures every heartbeat directly, including weak ones that might not produce a pulse you can feel at your wrist. It’s particularly useful when a provider suspects an irregular rhythm.
What Your Pulse Reveals About Your Health
Rate
A resting pulse consistently above 100 bpm in adults is called tachycardia. It can result from something as benign as too much coffee or as serious as a heart rhythm disorder. A resting pulse below 60 bpm is called bradycardia. In fit people, this is normal and healthy. In others, it can signal a problem with the heart’s electrical system.
Rhythm
A healthy pulse has an even, regular rhythm, like a metronome. An irregular pulse, where beats seem to skip, come early, or vary in spacing, can point to conditions like atrial fibrillation, one of the most common heart rhythm disorders. Checking whether your pulse feels regular or irregular is one of the simplest screening tools available.
Strength
Clinicians assess pulse strength on a four-point scale: absent (0), weak and thready (1+), normal (2+), and full and bounding (3+). A weak, thready pulse can indicate that the heart isn’t pumping enough blood per beat, which happens in conditions like heart failure or significant blood loss. A bounding pulse, where the beat feels unusually forceful, can occur with high blood pressure, fluid overload, or simply after vigorous exercise.
Pulse Pressure
If you know your blood pressure reading, you can calculate your pulse pressure by subtracting the bottom number from the top number. For example, a reading of 120/80 gives a pulse pressure of 40. A wider gap between those two numbers suggests that the large arteries are becoming stiffer, which is one of the earliest signs of cardiovascular aging. Arterial stiffness can be caused by high blood pressure, cholesterol buildup, and the natural loss of elasticity that comes with age. The greater the pulse pressure, the stiffer and more damaged the blood vessels are thought to be.