Resting vs Maximum Heart Rate
Resting heart rate and maximum heart rate are two distinct measurements. Learn what each means, normal ranges by age, how to measure them accurately, and why both matter.
What Each Number Actually Measures
Resting heart rate (HRrest) is the lowest heart rate you achieve while awake, relaxed, and not digesting a large meal. It reflects the ratio of parasympathetic to sympathetic nervous system activity — high fitness and good recovery lower it; stress, poor sleep, illness and dehydration raise it.
Maximum heart rate (HRmax) is the highest heart rate you can achieve during all-out maximal effort. It is set primarily by age and genetics, is largely fixed for a given individual at a given age, and declines by roughly 0.6–0.7 bpm per year across the lifespan.
Normal Ranges by Age and Fitness
| Group |
HRrest range |
Typical HRmax |
| Sedentary adult 20–40 | 65–85 bpm | 180–200 bpm |
| Recreationally active adult | 55–70 bpm | Age-predicted ±10 |
| Trained endurance athlete | 40–55 bpm | Age-predicted ±10 |
| Elite endurance athlete | 30–45 bpm | Age-predicted ±10 |
| Adult over 60 | 60–80 bpm | 160–175 bpm |
How to Measure Resting HR Accurately
- Measure first thing in the morning, before getting out of bed.
- Do not use a reading taken after coffee, an alarm shock, or checking your phone.
- Record for 60 seconds — do not extrapolate from 15 seconds × 4.
- Average 3–5 consecutive mornings. A single reading is noisy.
When a Change in Either Signals a Problem
- HRrest suddenly 10+ bpm above your baseline across several mornings — early sign of illness, overtraining, or under-recovery.
- Peak HR in hard workouts trending down over weeks — classic marker of accumulated fatigue.
- New resting HR persistently below 40 bpm in a non-athlete — worth discussing with a clinician, especially if accompanied by dizziness.
Maximum Heart Rate Formulas
- Tanaka (2001) — our default for men: HRmax = 208 − 0.7 × age. Meta-analysis of 18,712 participants.
- Gulati (2010) — our default for women: HRmax = 206 − 0.88 × age. Developed on 5,437 women.
- Gellish (2007): HRmax = 207 − 0.7 × age. Developed on regularly active adults.
- Nes / HUNT (2013): HRmax = 211 − 0.64 × age. Norwegian HUNT Fitness Study on 3,320 healthy adults.
- Fox (1971) — historical reference: HRmax = 220 − age. Simple and widely quoted, but a 1970s approximation with ±10–12 bpm variability that overestimates for active adults.
No formula is universally “correct.” The only way to know your true HRmax is a supervised maximum-effort test.
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