Your pulse is the rhythmic throbbing you feel in your arteries as blood is pumped through them by each heartbeat. Pulse rate equals heart rate - they're the same number!
Check: What causes the pulse you can feel in your wrist?
Flowchart
Use the pathway to build a clear mental model. Open each node and answer the check question.
1) Understand what pulse is
2) Learn to measure pulse rate
Find your pulse at your wrist (radial artery) or neck (carotid artery). Count beats for 15 seconds and multiply by 4, or count for 30 seconds and multiply by 2, to get beats per minute (bpm).
Check: If you count 20 beats in 15 seconds, what is your pulse rate in bpm?
3) Know normal resting heart rates
Resting heart rate varies by age and fitness. Children: 70-100 bpm. Adults: 60-100 bpm. Athletes often have lower rates (40-60 bpm) because their hearts are more efficient.
Check: Why do fit people tend to have lower resting heart rates?
4) Understand why heart rate changes
During exercise, muscles need more oxygen. Your heart beats faster to deliver more oxygenated blood. Heart rate also increases with fear, excitement, caffeine, and illness.
Check: Why does your heart rate increase during exercise?
Explanation
What is Your Pulse?
Your pulse is the rhythmic "beat" you can feel in your arteries. Each time your heart contracts (beats), it pushes blood into your arteries. The artery walls stretch to accommodate this surge of blood, then spring back. This stretching is what you feel as a pulse.
Your pulse rate is the number of pulses (beats) per minute - it's exactly the same as your heart rate.
How to Measure Your Pulse
You can feel your pulse wherever an artery passes close to the surface over a bone:
- Wrist (radial pulse) - place two fingers on the inside of your wrist below your thumb
- Neck (carotid pulse) - place two fingers beside your windpipe
- Don't use your thumb - it has its own pulse which can confuse your count
To calculate beats per minute (bpm): count beats for 15 seconds and multiply by 4, or count for 30 seconds and multiply by 2.
Normal Heart Rates
Heart rate varies depending on age, fitness, and what you're doing:
- Children (6-12 years): 70-100 bpm at rest
- Adults: 60-100 bpm at rest
- Trained athletes: 40-60 bpm at rest (their hearts pump more blood per beat)
Why Does Heart Rate Change?
Your heart rate increases when your body needs more oxygen:
- Exercise - muscles need more oxygen for respiration, so heart pumps faster
- Fear or excitement - adrenaline prepares your body for action
- Caffeine - stimulates the heart to beat faster
- Illness or fever - body is working harder to fight infection
After exercise, your heart rate gradually returns to resting level. Fit people recover faster because their cardiovascular system is more efficient.
Key Vocabulary
- Pulse: The rhythmic stretching of artery walls caused by each heartbeat.
- Heart rate: The number of times your heart beats per minute (bpm).
- Resting heart rate: Your heart rate when sitting quietly and relaxed.
- Recovery time: How long it takes for heart rate to return to resting level after exercise.
Why does this matter?
Doctors and nurses measure pulse as a vital sign - it tells them about your heart health. Athletes monitor heart rate to optimise training. Fitness trackers use heart rate to estimate calories burned. Understanding your own pulse helps you recognise when your body is working hard.
Examples
Example 1: PE Lesson Investigation
A class measures resting pulse rate, then does 2 minutes of star jumps. Students measure pulse immediately after, then every minute. Results show heart rate peaks right after exercise (often 140-180 bpm) then gradually decreases. The fittest students return to resting rate fastest. This demonstrates how exercise increases oxygen demand.
Example 2: Fitness Trackers
Many people wear smartwatches or fitness bands that constantly monitor heart rate. These devices use light sensors to detect blood flow through your skin. They alert you if your heart rate is unusually high or low, track exercise intensity, and even estimate how many calories you're burning based on heart rate data.
Example 3: Hospital Monitoring
In hospitals, heart rate is one of the "vital signs" checked regularly. Nurses might take your pulse by hand, or patients might be connected to monitors that continuously track heart rate. An abnormally fast or slow heart rate can indicate problems - a resting rate over 100 bpm (tachycardia) or under 60 bpm (bradycardia) may need investigation.
Example 4: Maximum Heart Rate
Athletes use a simple formula: maximum heart rate ≈ 220 minus your age. So a 10-year-old's maximum would be about 210 bpm. During intense exercise, you shouldn't exceed this. Coaches use heart rate zones (percentages of maximum) to plan training - lower zones for endurance, higher zones for speed work.
Practice
Answer all questions, then check your answers. Your quiz result is saved on this device.
Common Mistakes
Mistake 1: Using your thumb to measure pulse
Your thumb has its own pulse, which can interfere with counting. Always use your index and middle fingers to find someone's pulse. Press gently but firmly - too light and you won't feel it, too hard and you'll block the artery.
Mistake 2: Thinking higher heart rate always means unfit
A higher resting heart rate can indicate lower fitness, but during exercise, everyone's heart rate increases. What matters is: how high does it go? And how quickly does it recover? Fit people recover faster after exercise.
Mistake 3: Confusing pulse rate and blood pressure
Pulse rate (heart rate) measures beats per minute. Blood pressure measures the force of blood against artery walls and has two numbers (like 120/80). They're related but different measurements - you can have a normal pulse but high blood pressure.
Mistake 4: Not waiting long enough for resting rate
To measure true resting heart rate, sit quietly for at least 5 minutes first. If you've just walked to the measuring point or been moving around, your heart rate will still be elevated. For the most accurate reading, measure first thing in the morning before getting up.
Summary
- Pulse is the stretching of artery walls with each heartbeat - pulse rate equals heart rate
- Measure pulse at wrist or neck using index and middle fingers (not thumb)
- Calculate bpm by counting beats for 15 seconds × 4, or 30 seconds × 2
- Resting heart rate: children 70-100 bpm, adults 60-100 bpm, athletes 40-60 bpm
- Heart rate increases during exercise, fear, excitement, and illness
- Recovery time indicates fitness - fit people recover faster after exercise
Skills Checklist
- I can explain what pulse is and how it relates to heart rate.
- I can accurately measure and calculate pulse rate.
- I can state normal resting heart rates for different people.
- I can explain why heart rate changes during exercise.
- I can describe how fitness affects heart rate and recovery.