Classify your resting heart rate and get simple wellness guidance.
What Is Resting Heart Rate?
Your resting heart rate (RHR) is the number of times your heart beats per minute while you're at complete rest. It's best measured first thing in the morning before getting out of bed. A normal adult RHR ranges from 60 to 100 bpm.
Why Track It?
RHR is a simple but powerful indicator of cardiovascular fitness. A consistently lower RHR generally means better heart efficiency. Tracking trends over time can reveal improvements from exercise or early signs of illness or stress.
Factors That Affect RHR
Caffeine, stress, dehydration, medications, and poor sleep can raise your RHR. Regular aerobic exercise, good hydration, and quality sleep tend to lower it. If your RHR is consistently above 100 bpm or below 40 bpm with symptoms, consult your doctor.
Once you know your resting rate, use the Zone 2 heart rate calculator to turn it into personalized training ranges with the Karvonen method.
Measuring Resting Heart Rate Correctly
Resting heart rate is most reliable first thing in the morning, before you get out of bed and before caffeine. Find the pulse at your wrist below the thumb or at the side of your neck, count the beats for 30 seconds, and double the result. Counting a full 60 seconds is better still if the rhythm feels uneven.
Take the measurement on three consecutive mornings and average them. A single reading is easily thrown off by a poor night of sleep, a full bladder, or a stressful dream.
What Your Number Suggests
Most adults fall between 60 and 100 beats per minute. Well conditioned people often sit in the 40s or 50s because a stronger heart moves more blood per beat. A consistently lower resting rate generally reflects better cardiovascular fitness, and large studies link resting rates above about 80 to higher cardiovascular risk even within the normal band.
Age itself changes maximum heart rate more than resting rate, so a healthy 75 year old and a healthy 35 year old can share the same resting number. What matters more is your own trend. A resting rate that climbs five to ten beats above your usual level and stays there for several days often signals illness, dehydration, poor sleep, thyroid changes, or overtraining.
What Raises and Lowers It
Many everyday factors move the number, which is why context matters when you interpret a reading:
- Raise it: fever, dehydration, caffeine, nicotine, stress, pain, anemia, an overactive thyroid, and some asthma or decongestant medications
- Lower it: aerobic conditioning, deep rest, and beta blockers or certain heart rate controlling drugs
- Distort a reading: an irregular rhythm such as atrial fibrillation, which many wrist devices measure poorly
When to Call a Clinician
Contact a clinician for a resting rate consistently above 100 beats per minute, called tachycardia, or below 60 with symptoms such as dizziness, fainting, fatigue, or shortness of breath. A slow rate in a trained athlete or someone on a beta blocker without symptoms is usually expected.
Seek urgent care for a racing or pounding heartbeat that comes with chest pain, fainting, or breathlessness. If your pulse feels irregular when you count it manually, mention that specifically, because an irregular rhythm needs a different evaluation than a fast but steady one.
Disclaimer: This tool is for educational purposes only. Consult a healthcare professional for medical advice.