Good HRV for women and how the cycle changes it

A good HRV for a woman is one at or above her own baseline for the same phase of her cycle. For context, healthy women's average 5-minute resting RMSSD is about 43 ms at ages 25 to 34 and about 21 ms at ages 55 to 64 (Voss et al., 2015). The menstrual cycle adds a monthly pattern: HRV tends to be a few percent lower in the luteal phase than in the follicular phase.

HRV (heart rate variability) is the variation in time between heartbeats. For general ranges, see the pillar guide what is a good HRV.

What is a good HRV for women by age?

A good HRV for women depends mostly on age. In a population study of 782 healthy women, average 5-minute resting RMSSD fell from 42.9 ms at ages 25 to 34 to 19.1 ms at ages 65 to 74. The standard deviation was large at every age, so values well above or below the mean are common in healthy women.

Age	Women RMSSD (ms)	Women SDNN (ms)
25 to 34	42.9 (SD 22.8)	48.7 (SD 19.0)
35 to 44	35.4 (SD 18.5)	45.4 (SD 20.5)
45 to 54	26.3 (SD 13.6)	36.9 (SD 13.8)
55 to 64	21.4 (SD 11.9)	30.6 (SD 12.4)
65 to 74	19.1 (SD 11.8)	27.8 (SD 11.8)

Source: Voss et al., PLoS One 2015. 5-minute ECG lying down after rest, KORA S4 cohort, healthy women. Mean (standard deviation).

These are lab values. Overnight readings from rings and watches, and morning camera readings, often give different numbers. Use the table for context and your own trend for decisions. The values for men are in the HRV chart by age and sex.

Do women have lower HRV than men?

Women do not have consistently lower HRV than men. On RMSSD, the most common wearable metric, a study of 28,175 app users found 68 ms for women and 67 ms for men, a negligible difference (Altini and Plews, 2021). A meta-analysis of 63,612 people found women have lower SDNN but more high-frequency, vagal HRV power (Koenig and Thayer, 2016).

Study	Finding for women vs men
Koenig and Thayer, 2016 (172 studies)	Lower SDNN and total power, greater high-frequency (vagal) power, higher heart rate
Voss et al., 2015 (1,906 adults)	Slightly higher RMSSD in most decades, not statistically significant
Umetani et al., 1998 (24-h ECG)	Lower HRV under age 30; difference gone after 50
Altini and Plews, 2021 (28,175 app users)	Morning RMSSD 68 vs 67 ms, no meaningful difference

Source: as listed per row.

Koenig and Thayer summarize the pattern: "Although women showed greater mean heart rate, they showed greater vagal activity indexed by HF power of HRV." The takeaway is that age matters much more than sex for interpreting your number.

How does the menstrual cycle change HRV?

HRV tends to fall from the follicular phase to the luteal phase. A meta-analysis of 37 studies with 1,004 naturally cycling women found a medium-sized drop in cardiac vagal activity from follicular to luteal (d = -0.39). The largest change was in the premenstrual days compared with the mid-to-late follicular phase (Schmalenberger et al., 2019).

Phase (typical days)	Hormones	Average HRV pattern	Resting heart rate
Menstrual (first days)	Low progesterone	Higher than in the premenstrual days	Not separately reported
Follicular (to ovulation)	Rising estradiol	Higher	Lower than luteal
Mid-luteal (about a week after ovulation)	High progesterone	Lower	About 1.6% higher than follicular
Premenstrual (last days)	Falling progesterone	Lowest vs mid-to-late follicular in pooled studies	Not separately reported

Sources: Schmalenberger et al., 2019 and 2020; Altini and Plews, 2021. Phase timing varies by person. Patterns are group averages.

In everyday data the change is small. Across 639 app users with at least five tracked cycles, morning RMSSD was about 3.2% lower and heart rate about 1.6% higher in the luteal phase than in the follicular phase (Altini and Plews, 2021). For full luteal phase physiology, including temperature and symptoms, see luteal phase symptoms.

Why does HRV drop in the luteal phase?

Within-person studies link the luteal drop in HRV to progesterone. In two studies of 40 and 50 naturally cycling women with repeated hormone tests, higher-than-usual progesterone predicted lower-than-usual HRV in the same person, while estradiol showed no significant effect. HRV was lowest in the mid-luteal phase, when progesterone peaks (Schmalenberger et al., 2020).

The pattern is not the same for everyone. The 2019 meta-analysis found larger drops in athletes than in non-athletes, and different patterns depending on traits such as neuroticism. In women with premenstrual syndrome or premenstrual dysphoric disorder, the follicular-to-premenstrual change was not significant.

The authors also note limits: most studies estimated phase from cycle days rather than measuring hormones, and the findings apply to naturally cycling women with regular cycles.

How should women read their HRV trend?

Women can read HRV more accurately by comparing each day with the same phase in earlier cycles, not only with the last 7 days. A small drop before a period is expected for many women. A drop larger than your usual luteal dip, or a low reading in the follicular phase, deserves a closer look.

Practical rules:

• Expect the dip. A few percent lower HRV in the luteal phase is common and does not mean poor recovery.
• Compare like with like. Day 22 this month vs day 22 last month is a fairer comparison than day 22 vs day 8.
• Look for other causes. Alcohol, short sleep, hard training and illness are associated with lower HRV in any phase. See low HRV meaning.
• Track several cycles. The large app study above only included people with at least five tracked cycles.

If you have very heavy or painful periods, missed periods, cycles that change suddenly, or symptoms such as palpitations or fainting, see a doctor. HRV cannot explain or diagnose cycle problems.

Does hormonal contraception or menopause change this?

The cycle findings in this article come from naturally cycling women. Hormonal contraception changes hormone patterns, so the luteal HRV dip may look different or be absent. The data on menopause is mostly about age: HRV declines with age in women as in men, and the 24-hour gap between women and men disappeared after age 50 (Umetani et al., 1998).

If you use hormonal contraception, are pregnant, or are in perimenopause, build your baseline from your own data and do not expect the classic cycle pattern. Talk with a doctor about any questions specific to your health.

How Svanu handles the cycle

Svanu includes optional menstrual cycle tracking, hidden for male profiles. It reads cycle data from Apple Health, estimates your phase, and shows associations between phase and your HRV, resting heart rate and temperature. It is never a contraception or fertility tool.

The recovery score compares this morning's HRV and resting heart rate with your own recent baseline, plus sleep, and shows what moved it. HRV comes from Apple Health or from a 20 to 30 second camera reading. See the Svanu home page for how it works.

The short answer

A good HRV for women is a stable trend against her own baseline, read with cycle phase in mind. Average resting RMSSD falls from about 43 ms in the late 20s to about 20 ms after 55. HRV is often a few percent lower in the luteal phase, linked to progesterone. Compare phase with phase.