A pulse is the rhythmic throbbing you feel when you press your fingers against certain points on your body, like your wrist or neck. Each throb corresponds to one heartbeat. More precisely, what you’re feeling isn’t the heart itself but the brief expansion of an artery as a wave of blood passes through it. For most adults at rest, this happens 60 to 100 times per minute.
How Your Pulse Is Created
Every time your heart contracts, it pushes blood into the aorta, the body’s largest artery. That surge of blood stretches the aorta’s elastic walls outward, creating a pressure wave that travels rapidly along the arterial network. This compression wave is what reaches your wrist, even though your wrist sits roughly a meter from your heart. After the wave passes, the artery relaxes back to its resting size. That cycle of expand and relax is one pulse beat.
The elasticity of your arteries plays a critical role in keeping blood flowing smoothly. Large arteries act like a cushion, absorbing the force of each heartbeat and then gently pushing blood forward between beats. Without that cushioning effect, blood pressure would spike dramatically with every contraction and drop to near zero in between. Instead, pressure stays within a narrower range, and blood keeps moving continuously through your organs and tissues.
Pulse vs. Heart Rate
People use “pulse” and “heart rate” interchangeably, but they measure slightly different things. Your heart rate is the number of times your heart squeezes per minute, driven by electrical signals within the heart muscle. Your pulse is the number of times your arteries expand in response to that squeezing. In a healthy person, the two numbers match. But in certain heart rhythm disorders, some heartbeats may be too weak to generate a detectable pulse wave at the wrist. The gap between the two numbers is called a pulse deficit.
Unless a device uses EKG technology to detect electrical signals, it’s reading pressure changes in your arteries rather than your heart’s actual electrical activity. Fitness trackers and pulse oximeters, for example, measure your pulse, not your heart rate in the strict clinical sense.
Normal Resting Ranges by Age
A “normal” pulse depends heavily on age. Younger bodies have faster metabolisms and smaller hearts that need to beat more frequently to circulate blood. Here are the standard resting ranges, measured in beats per minute:
- Newborns (0 to 1 month): 100 to 160
- Infants (1 to 12 months): 80 to 140
- Toddlers (1 to 3 years): 80 to 130
- Preschoolers (3 to 5 years): 80 to 110
- School-age children (6 to 12 years): 70 to 100
- Adolescents and adults: 60 to 100
A resting pulse below 60 is called bradycardia. That sounds alarming, but it’s common and harmless in fit individuals and trained athletes, whose hearts are efficient enough to pump adequate blood with fewer beats. A resting pulse between 40 and 60 is typical in this group and also normal during sleep. On the other end, a resting pulse consistently above 100 is called tachycardia, which can signal anything from dehydration or anxiety to a heart rhythm problem.
Where to Feel Your Pulse
You can detect a pulse anywhere an artery runs close to the skin’s surface and over a firm structure like bone. The most commonly used locations are:
- Wrist (radial artery): The inner side of your wrist, just below the base of your thumb. This is the easiest spot for self-checks.
- Neck (carotid artery): The side of your neck, in the soft groove beside the windpipe. This pulse is strong and easy to find during exercise.
- Inner arm (brachial artery): The inside of your elbow, along the inner edge of the biceps. This is where blood pressure cuffs are typically placed.
- Groin (femoral artery): The crease where the leg meets the torso. This is primarily used in clinical settings.
To check your own pulse, place two fingertips (not your thumb, which has its own pulse) on the radial artery at your wrist. Count the beats for 15 seconds and multiply by four, or count for a full 60 seconds if the rhythm feels uneven.
What Affects Your Pulse
Your resting pulse isn’t a fixed number. It shifts throughout the day based on what your body is doing and what you’re putting into it. Physical activity raises it, obviously, but many other factors move it in less obvious ways.
Caffeine triggers a burst of sympathetic nervous system activity, the “fight or flight” branch, which temporarily raises blood pressure and pulse rate. Stress and anxiety do the same thing through the same pathway. Body temperature matters too: a fever speeds the pulse, while a significant drop in body temperature slows it. Dehydration reduces blood volume, forcing the heart to beat faster to maintain circulation. Pregnancy increases both blood volume and fluid levels, often producing a stronger, more noticeable pulse. Certain medications, particularly beta-blockers prescribed for heart conditions, deliberately slow the pulse by dampening the nervous system’s stimulating signals to the heart.
What Your Pulse Can Tell You
Beyond just speed, the quality of your pulse carries information. A healthy pulse feels steady, evenly spaced, and moderate in strength. Variations from that pattern can be meaningful.
A bounding pulse feels unusually strong, like a hard throbbing under your fingertips. It can show up during heavy exercise or after caffeine, which is harmless. But it also accompanies conditions like anemia, an overactive thyroid, heart valve problems, fever, or chronic kidney disease. A thready pulse is the opposite: weak and difficult to detect, suggesting low blood volume or poor heart output. An irregular pulse, where beats seem to skip or come at uneven intervals, may point to a heart rhythm disturbance worth investigating.
Pulse Pressure
If you’ve ever had your blood pressure measured, you’ve seen two numbers, like 120/80. The difference between those two numbers is your pulse pressure. In that example, it’s 40 mmHg, which is considered normal. Pulse pressure reflects how forcefully blood is being pushed through your arteries with each heartbeat and how well your arteries are absorbing that force. A consistently wide or narrow pulse pressure can signal cardiovascular issues that a simple pulse rate check wouldn’t reveal.
Pulse Targets During Exercise
Your pulse is one of the simplest tools for gauging workout intensity. The general guideline starts with estimating your maximum heart rate. A widely validated formula is 208 minus 0.7 times your age. For a 40-year-old, that works out to about 180 beats per minute. This number is independent of gender or fitness level.
Moderate-intensity exercise typically falls between 50% and 70% of that maximum, while vigorous exercise sits between 70% and 85%. For that same 40-year-old, moderate effort would mean keeping the pulse between roughly 90 and 126, while vigorous effort would push it to 126 to 153. Staying in these zones helps ensure you’re working hard enough to build cardiovascular fitness without overexerting.
When a Pulse Signals an Emergency
Most pulse variations are benign, but certain combinations of symptoms require immediate attention. A very rapid pulse paired with chest pain, shortness of breath, dizziness, or sudden weakness can indicate a dangerous heart rhythm. One particularly serious condition, ventricular fibrillation, causes the heart to quiver chaotically instead of pumping. Blood pressure drops, the pulse disappears, and without treatment within minutes, it is fatal. If someone collapses and you can’t find a pulse at their neck or wrist, that’s a cardiac arrest, and CPR should begin immediately.