Good HRV by Age: What's Normal & Is Yours Healthy?

Short answer: there is no single "good" HRV - it's defined by your age band, measurement method, and your own baseline. As a rule of thumb using RMSSD, a healthy figure is about 55–105 ms in your 20s, dropping roughly 5–8 ms per decade to 18–50 ms past 60. If your number sits near the middle of your age band and holds steady or trends up over time, it's good. Full chart and a 3-step self-check below.

If you've just started tracking HRV, the temptation is to treat it like a test score. It isn't. HRV is a moving snapshot of your nervous system, and the "right" value for a fit 24-year-old would be an unusually high one for a healthy 58-year-old. This guide gives you the age reference first, then the part most articles skip: how to actually interpret your number.

HRV here is a wellness signal, not a medical measurement. The ranges describe healthy populations, not clinical cut-offs. Persistent low or erratic readings with symptoms are worth a conversation with a doctor.

Good HRV by Age Chart (RMSSD)

Wearables often report HRV as RMSSD - a beat-to-beat measure tied to parasympathetic ("rest and recover") activity. Some devices use SDNN or proprietary readiness scores instead, so always check which metric your app is showing.

Use this table as orientation, not diagnosis. The "typical range" columns are wide on purpose: that spread is the whole point.

Age band	Median RMSSD (ms)	Healthy range (ms)	Lower / higher edge signals
18–25	~68	55–105	Below ~45 worth watching; 100+ common in athletes
26–35	~58	40–90	Below ~38 worth watching
36–45	~48	30–75	Below ~28 worth watching
46–55	~38	25–60	Below ~22 worth watching
56–65	~30	20–50	Below ~18 worth watching
65+	~25	18–45	Below ~15 worth watching

Compiled from large population datasets (Lifelines Cohort, 150,000+ participants; Baependi Heart Study) and aggregate consumer-wearable reporting.

Notice what the "signals" column is not doing: it's not calling anything a failure. Being at the low edge for your age is a prompt to look at your trend and habits, not a diagnosis.

The one-line version for your exact age

Age	A "good" RMSSD sits around…
25	55–95 ms
30	45–85 ms
35	40–75 ms
40	35–68 ms
45	30–60 ms
50	28–55 ms
55	25–50 ms
60	22–45 ms
65+	18–42 ms

What overnight HRV looks like in real Apple Watch data

Charts like the one above come from large research groups. To see how real Apple Watch wearers compare, we looked at anonymized overnight RMSSD from 34 Bodly users with at least a week of nights (data up to September 2026). Bodly calculates RMSSD from the raw heartbeat data your watch records during sleep, the same kind of number WHOOP and Oura show.

What we measured	Result
Median overnight RMSSD	32 ms
Middle half of people	26 to 55 ms
8 in 10 people	21 to 77 ms

The spread is huge: the top tenth of people had more than three times the HRV of the bottom tenth, and all of them were healthy enough to use a fitness app every day. That is why the percentile method below matters more than any single "good" number.

(Apple's own Health app shows a different measure, SDNN. For Apple Watch SDNN by age, see Apple Watch HRV.)

These are Bodly users, not a random sample of the population, and the group is small.

The Percentile Method (Better Than a Single Number)

Here's the mental model that makes the chart useful. Inside every age band, HRV roughly follows a bell curve. So instead of asking "is 42 good?", ask "where does 42 sit in my age band?"

• Bottom ~25% of your band → on the low side. Look at sleep, alcohol, training load, and stress before worrying.
• Middle ~50% → squarely normal and healthy. This is "good" for almost everyone.
• Top ~25% → strong parasympathetic tone, common in trained and well-recovered people.

A 40-year-old at 45 ms and a 25-year-old at 75 ms are both sitting comfortably mid-band - both are "good," despite a 30 ms gap. That gap is age, not health. This is why chasing someone else's screenshot is a dead end.

HRV Only Makes Sense Alongside Resting Heart Rate

Most guides look at HRV in isolation. In practice, HRV and resting heart rate (RHR) move together and read best as a pair:

Your pattern	What it usually means
HRV up, RHR down	Well recovered - a green light
HRV steady, RHR steady	Baseline; carry on
HRV down, RHR up	Stress, poor sleep, alcohol, illness, or overreaching
HRV down, RHR down	Often deep fatigue or heavy training load - ease off

If you only ever check one number, check the combination. A single low HRV morning with a normal RHR is usually noise. A low HRV with an elevated RHR for several days is a real recovery signal.

Why HRV Falls With Age (and How Much Is in Your Control)

The decline is biological, but it's not fixed:

1. Vagus-nerve responsiveness fades. The main brain-to-heart line gets less reactive, softening the beat-to-beat variation that healthy recovery produces.
2. Arteries stiffen. Less elastic vessels dampen the feedback between heart and brain.
3. The autonomic balance shifts. The system tilts gradually toward sympathetic "fight or flight" dominance.

The controllable part is large. Active adults commonly hold RMSSD values a full age band above sedentary peers - effectively "younger" autonomic function. Aerobic fitness, regular sleep timing, lower alcohol, and stress management are the levers that actually move the needle over months. (HRV isn't the only number that ages on a curve - your max heart rate declines with age too, which is why training zones shift as you get older.)

Good HRV by Age and Gender

Sex changes the absolute numbers more than the interpretation:

Age band	Men (median RMSSD)	Women (median RMSSD)
18–30	~66 ms	~48 ms
31–45	~48 ms	~40 ms
46–60	~35 ms	~32 ms

Younger men tend to read higher; the gap narrows after ~50. For women, menstrual-cycle phase shifts HRV - it often dips in the luteal phase - so read the trend across a full cycle rather than reacting to single days. The rule holds regardless of sex: don't benchmark against a different body, benchmark against your own history.

A 3-Step Check: Is My HRV Good?

Skip "is this number normal?" and run this instead.

Step 1 - Am I in range for my age? Find your band in the chart above. If you're inside the healthy range, you pass. One-time sanity check, done.

Step 2 - Is my baseline stable? Look at your 7-day rolling average. Swings of ±30% or more with no obvious cause (hard session, travel, illness, drinking) suggest something's off. A steady line is a good line.

Step 3 - Does it recover and trend? After stress, HRV should rebound within 2–5 days. Over months, a flat-or-rising 30-day average means your fitness and stress resilience are holding or improving. That trend, not the raw value, is what tracks with long-term health.

Pass all three and your HRV is good - whether the number is 30 or 90.

How to Measure HRV So the Number Is Useful

HRV is easy to distort. You get better data when the setup stays boring:

1. Use one device.
2. Measure at the same time or rely on the same overnight window.
3. Avoid comparing a 1-minute reading with an overnight average.
4. Avoid measuring right after caffeine, alcohol, a hard workout, or a stressful commute.
5. Compare 7-day and 30-day trends, not one reading.
6. Watch resting heart rate and sleep at the same time.
7. Add notes for travel, illness, alcohol, unusually hard training, or menstrual-cycle phase.

If your device gives a readiness score instead of raw RMSSD, treat it as a helpful summary, but still learn what inputs drive it. A readiness score can be useful, but it can also hide why the score changed.

What Drags HRV Down (Same at 25 and 55)

• Alcohol - one of the largest and most immediate hits; it suppresses HRV the night after drinking, even at low doses.
• Short or irregular sleep - a single rough night measurably lowers next-day HRV.
• Hard training - a normal 24–72 hour dip; only a problem when it stays down through a whole block.
• Chronic stress - keeps the sympathetic system switched on, dragging HRV for weeks.
• Getting sick - HRV often drops before symptoms, making it an early warning.

What Lifts HRV Over Time

• Zone 2 aerobic work - the most reliable long-term driver. Find your zone with the target heart rate calculator.
• Consistent sleep timing - regularity rivals total hours.
• Slow breathing - a few minutes near 6 breaths/minute nudges vagal tone.
• Less late alcohol - usually the fastest visible win.
• Managed load and stress - deload weeks and downtime count.

Give any change 2–4 weeks and judge it on the rolling average, not tomorrow's reading.

Three HRV Myths Worth Dropping

• "Higher is always better." Generally true, but very high and erratic readings (well above 200 ms) can reflect an irregular rhythm rather than elite fitness - worth checking if it looks off.
• "My device is wrong because it doesn't match my friend's." Different sensors, timing, and algorithms produce different absolute numbers. Compare within one device only.
• "One bad morning means I'm overtraining." Single readings are noisy. Only a multi-day pattern - ideally HRV down and RHR up - is worth acting on.

When Low HRV Deserves Medical Context

Low HRV by itself is not a diagnosis. It is a signal. Most dips come from normal causes: poor sleep, alcohol, travel, illness, stress, or training load.

Still, consider medical advice if low or erratic HRV is persistent and paired with:

• Chest pain, fainting, or shortness of breath.
• Irregular heartbeat sensations.
• New medication changes.
• Unexplained fatigue or swelling.
• A much higher resting heart rate than usual.
• Symptoms that do not match your normal training or stress patterns.

Wearables are useful for trend awareness, but they should not replace clinical evaluation when symptoms are present.

Put Your HRV in Context

A single day's HRV tells you almost nothing. The value shows up when you can see it move against your sleep, stress, training, and body changes over weeks.

That's the gap Bodly is built to close. Instead of leaving HRV stranded in a recovery app, it sits next to the rest of your progress - calories, weight, measurements, progress photos, sleep score, stress, and strain - so you can see why your recovery shifted, not just that it did. You watch your own 7-day and 30-day baseline in context rather than measuring yourself against a chart.

If you want more than one isolated metric, try Bodly. And if you're deciding whether to add dedicated recovery hardware, our best WHOOP alternatives breakdown covers where an all-in-one tracker fits versus a strap or ring. For a different angle on progress the scale hides, see how to measure body fat.

Bottom line: a good HRV is one that's normal for your age and steady-or-improving for you. Find your band once, then stop watching the chart and start watching your trend.

Keep reading

Knowing where you sit is the easy half. How to increase HRV ranks the interventions by effect size, and Garmin Body Battery explained shows how HRV feeds the daily readiness scores most wearables now display.

• Apple Watch HRV: What's Normal and How Accurate?
• Heart Rate Recovery by Age: What's a Good Number?
• Normal Breathing Rate & Blood Oxygen While Sleeping

Sources

• Frontiers in Public Health: An Overview of Heart Rate Variability Metrics and Norms
• European Society of Cardiology / North American Society of Pacing and Electrophysiology HRV standards
• Lifelines Cohort Study - HRV distribution across age
• Baependi Heart Study - HRV by age and sex