SLEEP DATA
What Is a Good HRV? Real Numbers and Ranges
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I check my HRV almost every morning. I have done it for years, in the US, in India, in Bali, and in Shanghai. Over more than 1,700 nights I have watched that one number rise and fall with my sleep, my stress, my travel, and the air I breathe.
So I get why people want a magic HRV number. It feels like there should be one. There is not. Let me show you what the number really means, and what a good one looks like in real life.
There is no single good HRV number that works for everyone. A good HRV is a high one for you, held steady or rising over weeks. Two healthy people can sit far apart. One might live near 40. Another might live near 80. Both can be fine. What matters is your own trend, not someone else's number.
01. What HRV Actually Means
HRV stands for heart rate variability. It is the tiny time gap between one heartbeat and the next. Your heart does not beat like a clock. When you are calm and rested, the gaps change a lot from beat to beat, and that is a good sign. When you are stressed, sick, or tired, the gaps get more even, and your HRV number drops.
So a higher HRV usually means calm and well recovered. A lower one usually means stress, poor sleep, hard training, alcohol, or illness. Your watch measures it mostly while you sleep, because that is when your body does its real recovery.
02. Is There One Good HRV Number?
No, and anyone who gives you one flat number is guessing. Across healthy adults, HRV can sit anywhere from about 20 to over 100. Most people land in the middle. The number alone means little. A 45 is fine if your normal is 45. A 45 is a warning if your normal is 65 and it just dropped.
03. What Is a Good HRV by Age?
HRV slowly falls as you get older. That is normal and it happens to everyone. Big studies that measured HRV across thousands of people found it drops steadily with age (Umetani and colleagues, published in the Journal of the American College of Cardiology). Younger people tend to sit higher. Fit people often sit higher than unfit people of the same age.
Here is a very rough guide. Treat it as a ballpark, not a target. Your own baseline matters far more than any chart.
| Age | Rough HRV range (ms) |
|---|---|
| Under 25 | 55 to 105 |
| 25 to 34 | 50 to 95 |
| 35 to 44 | 40 to 80 |
| 45 to 54 | 35 to 65 |
| 55 to 64 | 25 to 55 |
| 65 and up | 20 to 45 |
If your number is lower than the band for your age but it is steady and you feel good, that is likely just your normal. Track your own trend for a few weeks before you read anything into it.
04. What My Own HRV Looks Like, Across Three Years
I am one person, not a study, so treat this as a real example, not a rule. The best way to show you that one HRV number means nothing is to show you mine across three years.
December 2024. A heavy training block. Average 52 ms.
This was a heavy training stretch. Most nights my HRV sat in the 50s and 60s, but when the load piled up it crashed hard. See that drop to 25. That was my body telling me it was buried, and it bounced back a few nights later. Hard training pulls HRV down. That is normal.
All of 2025, month by month. Average 45 ms for the year.
Now zoom out to a whole year. I started around 49. Through a heavy training block in late winter it fell into the mid 30s. Through summer it climbed to the high 50s, my best stretch. In September I got sick, my oxygen dropped, and my HRV crashed into the 30s again. Then it slowly climbed back. Same body, same year, from 35 to 59 as a monthly average. If I judged myself by one month, I would have been wrong every time.
June 2026, night by night. Average 50 ms.
And here is a recent month up close. Averaging 50, but swinging from 37 on my worst night to 66 on my best, night to night. That swing is the point.
Three years, three very different pictures, all from the same person and the same watch. My HRV has been in the 20s and it has been in the 60s. None of it meant anything on its own. What mattered every time was the trend and what was going on in my life around it. Travel is part of it too. When I move from dry US air to the wet, heavy air of Mumbai or Bali, my sleep and breathing change, and my HRV feels it within a night or two.
The full spread of my nightly HRV across three years. All of it normal for me, at different times.
My own WHOOP data, 2024 to 202605. Why Your Watch and Your Friend's Watch Disagree
This trips a lot of people up. WHOOP, Garmin, and Apple Watch all measure HRV, but they do not measure it the same way or at the same time of night. So the numbers rarely match, even on the same wrist on the same night. I wear and track all three, and they each give me a different HRV. That is normal.
Do not compare your Apple number to your friend's WHOOP number and try to decide who is healthier. Pick one device, learn your own range on it, and follow that line. The device you use matters less than being consistent with it.
06. What Moves Your HRV Up and Down
A few things push it up over time: steady sleep on a regular schedule, easy aerobic training like slow runs and walks, no alcohol before bed, calm evenings, and breathing through your nose at night instead of your mouth.
A few things pull it down: alcohol, late heavy meals, poor or short sleep, hard training or a big day of steps, stress, travel, and getting sick. None of these are surprises. Your HRV is just the scoreboard.
07. How to Read Your Own Number the Right Way
Watch the trend, not the night. One low reading means little. A slow drop over a week or two means something. Compare you to you. Your baseline is the only fair thing to measure against. And look at the whole picture. Pair your HRV with how you slept, how you feel, and your resting heart rate.
08. Where Breathing Fits In
Most of your HRV recovery happens in deep sleep, when your body is calm. Anything that breaks that calm tends to lower it. Mouth breathing at night is one of those things. It can lead to more wake ups and lighter sleep, and that shows up as a lower HRV in the morning.
Keeping your nose open with a nasal strip, and keeping your mouth closed with mouth tape, helps you hold calm nose breathing through the night. That does not change your HRV on its own. It just protects the calm sleep where your HRV is built.
Protect the calm sleep where your HRV is built. Open your nose, keep your mouth closed, breathe easy all night.
Awesome Nasal StripsAwesome Mouth TapeTakeaways
- There is no one good HRV number. A good HRV is a high one for you, held steady or rising over weeks.
- HRV is the tiny time gap between heartbeats. Higher usually means calm and recovered. Lower usually means stress, poor sleep, or fatigue.
- Healthy adults range from about 20 to over 100. It falls with age and rises with fitness.
- Age charts give a rough idea only. Your own baseline is what counts.
- Across three years my own HRV has been in the 20s and in the 60s. It only made sense next to the trend and my life around it.
- Different watches give different numbers. Pick one and follow your own trend.
FAQs
This article is for informational and educational purposes only. It is not medical advice and is not intended to diagnose, treat, cure, or prevent any disease or medical condition. If you are worried about your heart rate or your HRV, please talk to a doctor.