Does Low HRV Mean You Are Anxious?
A single low reading and a stable personality pattern are genuinely different things, and the research treats them that way.
This article covers what the published literature says about the relationship between HRV and anxiety or negative affect, focusing on the distinction between momentary state readings and trait-level associations. It does not cover clinical anxiety disorders as diagnoses, treatment outcomes, or device-specific measurement accuracy.
A single low HRV reading on any given morning does not reliably indicate that you are anxious in that moment. The question of whether the stable personality trait of neuroticism tracks with lower average HRV over time is a genuinely separate question, and the research gives a murkier, more contested answer there. Conflating the two has produced a lot of confusion, and the evidence is worth reading with that distinction firmly in mind.
What People Are Actually Asking
Imagine waking up, glancing at your tracker, and seeing an HRV of 48 when your usual sits around 62. The immediate interpretive leap many people make is: something is emotionally wrong with me today. That leap feels intuitive, and it is exactly what the research has spent some effort testing.
The forums and tracking communities are full of versions of this question, ranging from curiosity about what a consistently low number means to suspicion that the device is confirming something about a person's inner state. People expect a low morning HRV to be a reliable signal of psychological distress in the moment. On current data, the evidence does not support that expectation in any straightforward way.
3 studies
- Neuroticism as a personality trait was associated with lower resting HRV, and that association was not fully accounted for by cardiovascular disease or depression, suggesting the relationship between the trait and autonomic tone has some independence.
- In a cohort of more than 149,000 participants, neuroticism was modeled as a predictor of HRV and did not explain meaningful variance beyond demographic factors, directly contradicting the assumption that the neuroticism-HRV link is robust at the population level.
- When trait neuroticism, perceived stress, and state anxiety were tested directly against resting HRV with appropriate statistical correction, none of them showed a statistically significant association. This is a clean null result, not a weak or inconsistent trend.
The Two Questions That Keep Getting Merged
There is a version of this topic that is genuinely interesting and a version that is not well supported, and they keep getting merged into the same claim.
The first question is whether a single HRV reading, the number your wearable shows you on a Tuesday morning, reliably reflects your anxiety or negative emotional state at that moment. On current evidence, the answer is no. A 2025 study by Belica et al. tested trait neuroticism, perceived stress, and state anxiety against resting HRV and heart rate in medical students, applied Bonferroni correction to account for multiple comparisons, and found no statistically significant association with any of them. Not marginal. Not ambiguous.
The second question is whether people who score high on the personality trait of neuroticism, a stable dispositional tendency toward negative emotion, tend to have lower average HRV over time. That question has a more complicated answer. A 2016 analysis by Čukić et al. found an association between neuroticism and lower resting HRV that persisted even after accounting for cardiovascular disease and depression. A 2010 study by Ode et al. reported that neuroticism was relevant for understanding daily-life HRV patterns. A cohort study drawing on more than 149,000 participants, published by Tegegne et al. in 2019, modeled neuroticism as a predictor and found it did not explain meaningful HRV variance beyond basic demographics. The literature has not resolved that disagreement.
Understanding why any HRV number means less than it appears to is part of the same problem. Average HRV varies enormously between individuals for reasons that have nothing to do with emotional state, including age, fitness level, and the measurement method itself.
What Happens During Stress, as Opposed to at Rest
Several studies in this space focus not on resting HRV but on how HRV changes during or in anticipation of a stressful event. That is a meaningfully different measurement context, and the findings do not transfer cleanly to interpreting a morning resting reading.
A 2012 study by Di Simplicio et al. examined HRV during an emotion-regulation task in people at elevated risk for psychopathology and found reduced HRV during that task compared to controls. A 2014 study by Hansen et al. looked at how neuroticism related to HRV reactivity under threat of shock, finding that higher neuroticism tracked with different autonomic responses to anticipated stress. A 2017 study by Evans et al. found that neuroticism and extraversion related to physiological stress reactivity in adolescents during stressor tasks. A 2026 study by Wagenblast et al. examined psychophysiological responses to repeated anticipatory stress and found neuroticism influenced heart rhythm patterns in that context.
None of these reactivity findings tell you what a stable low resting HRV on a calm morning means emotionally. Reactivity during a provoked stressor and baseline resting tone are related concepts, but they are not interchangeable data points. Treating them as equivalent is where the interpretation tends to go sideways.
For context on what can cause an abrupt shift in your HRV reading outside of emotional factors, the question of why HRV sometimes drops sharply overnight covers some of the same confounders. And on the measurement side, how your device captures HRV in the first place adds another layer of uncertainty to any single morning number.
The studies linking neuroticism to lower HRV were largely conducted in adult populations with specific sampling criteria, including medical students, general cohort participants, and adolescents in controlled laboratory settings. None of them establish what a given individual's morning wearable reading means in the context of their emotional state on that specific day. The population-level trait association, where it exists, does not translate into a day-to-day interpretive tool for any one person.
Where That Leaves the Morning Number
If your HRV reads low on a given morning, the published literature does not support concluding that you are anxious, that your nervous system is in distress, or even that you scored high on neuroticism as a personality dimension. What a resting HRV number picks up most reliably is physical state variation: sleep quality, recovery from exertion, illness onset, and similar factors.
The neuroticism-HRV association, where studies find it, is a group-level statistical pattern across many people measured many times. It does not work as a daily emotional readout. The two largest, most rigorously corrected studies in this evidence set, the Tegegne cohort and the Belica direct test, found no meaningful association at all.
I find the split in this literature genuinely interesting rather than frustrating. Any relationship between autonomic tone and psychological traits is probably small, context-dependent, and easily swamped by physical and demographic variables. That is useful to know, even if it does not give a clean interpretive rule for the number on your screen.
Common questions
Does a low morning HRV reliably indicate I am anxious that day?
On current evidence, no. A 2025 study that directly tested state anxiety and perceived stress against resting HRV found no statistically significant association. A single morning reading reflects a mix of physical factors, including sleep, recovery, and illness, more than it reflects emotional state.
Is there any connection between personality and HRV?
Some studies find that people who score high on neuroticism as a stable personality trait tend toward lower resting HRV on average, and a 2016 analysis found that association was not fully explained by cardiovascular disease or depression. However, a cohort study of more than 149,000 participants found neuroticism did not explain meaningful HRV variance beyond demographics, so the literature is genuinely divided on whether the association is robust.
Why does my HRV seem low compared to averages I see online, even though I feel fine?
HRV varies enormously between individuals for reasons including age, fitness level, measurement timing, and device type. A number that appears low relative to a published average may be entirely typical for your physiology. The research does not establish a threshold below which a resting HRV reading signals an emotional or psychological concern.
Do the studies on stress reactivity and HRV apply to my resting morning reading?
Not directly. Several studies examine how HRV changes during or in anticipation of a stressor, which is a different measurement context from a calm resting baseline. Reactivity during a provoked task and resting baseline tone are related but not interchangeable, and findings from one context do not transfer cleanly to interpreting the other.
If neuroticism and HRV are linked in some studies, why do other large studies find no relationship?
The disagreement likely reflects differences in sample size, statistical correction methods, and how much variance demographics like age and sex already explain. The largest study in this evidence set, drawing on more than 149,000 participants, found that once demographics were modeled, neuroticism added nothing meaningful. Smaller studies may have detected a real but very small signal, or their findings may not generalize.
Sources
- The Association between Neuroticism and Heart Rate Variability Is Not Fully Explained by Cardiovascular Disease and Depression.
- Determinants of heart rate variability in the general population: The Lifelines Cohort Study.
- Neuroticism's importance in understanding the daily life correlates of heart rate variability.
- Association of negative affect with resting heart rate variability in medical students.
- Decreased heart rate variability during emotion regulation in subjects at risk for psychopathology.
- Measures of the psychophysiological response to recurrent anticipatory stress - the influence of neuroticism on heart rhythm and skin resistance.
- Relationship between neuroticism, threat of shock and heart rate variability reactivity.
- Neuroticism and extraversion in relation to physiological stress reactivity during adolescence.