A DEFINITION
Nervous System Intelligence
Nervous System Intelligence (NSI) is the measurable capacity to recognize your nervous system's state and change it on purpose — in individuals, and in the organizations they work inside.
Most performance frameworks start with mindset. This one starts with biology — because you cannot think your way out of a body that has decided it is not safe.
By Marian Bacol, Founder & CEO, Somarae · Published · Updated
What Nervous System Intelligence is not
- It is not positive thinking. Your nervous system does not respond to arguments.
- It is not stress management. Managing stress assumes the load is fixed. NSI asks what the load is doing to the people carrying it.
- It is not resilience training. Resilience, as most companies teach it, means tolerating more. NSI means recovering faster.
- It is not therapy, and it does not replace it.
- It is not a perk. It is infrastructure.
The difference matters because the interventions are different. You cannot fix a physiological problem with a cognitive tool.
The four capacities
Signal
Noticing your state shift while it is happening, not three hours later.
Low: You find out you were dysregulated by reviewing the email you sent.
Measured by: interoceptive accuracy, state check-ins tracked over time.
Shift
Changing your state on purpose, with something that works in under five minutes.
Low: You know you are activated and have no tool that touches it.
Measured by: pre/post state change, time-to-baseline.
Recovery
How fast you return to baseline after load — the part almost nobody trains.
Low: Monday's meeting is still in your shoulders on Thursday.
Measured by: heart rate variability trend, sleep architecture, wearable data.
Capacity
How much load you can carry before you lose access to skills you actually have.
Low: You are a good listener until 4pm.
Measured by: performance under load, ceiling mapping across a week.
Most leadership development trains Signal and stops. The other three are where the compounding happens.
What the practices actually train
A framework that cannot tell you what to do on a Tuesday is just vocabulary. Here is where each practice lands — and which capacity it does not touch.
Signal — noticing
Body scan and somatic tracking. Breath awareness — watching the pattern without changing it. Naming what you feel. The state check-ins inside the Somarae app.
Signal is the one capacity that cannot really be trained on its own. It gets built as a byproduct of doing the other practices with attention. The noticing is the check-in wrapped around the tool, not a separate exercise.
Shift — changing state now
Cyclic sighing and the physiological sigh. Extended-exhale breathing. Vocal toning and humming. Tapping. Shaking and discharge work. Orienting. Movement that completes the stress cycle. The Soma sessions live here.
Most of the toolkit sits in Shift. That is normal — and it is exactly why the other three capacities are the differentiator.
One distinction almost everyone in this category flattens: shift has a direction.
Down-regulating from an activated, sympathetic state and up-regulating out of shutdown are different problems needing different tools. Extended-exhale breathing calms an activated system and does very little for a collapsed one — that needs movement, orienting, sound, more input rather than less.
A team stuck in activation and a team stuck in shutdown look nothing alike and need opposite interventions. Handing both the same breathing exercise is why most corporate wellness content produces no measurable change.
Recovery — returning to baseline
The least-served capacity in the entire corporate wellness market — and the one Somarae's product architecture is already built for.
Recovery is not a different set of practices. It is the same practices governed by frequency and placement rather than intensity. Ninety seconds between meetings moves the recovery trajectory more than one long session on a Friday.
Which means "micro-practice" is not a convenience compromise. It is the mechanism.
Capacity — the ceiling
No practices of its own. Capacity is the output of running Signal, Shift, and Recovery consistently over weeks.
That is a feature, not a gap. It is the retention argument: capacity is what a 90-day pilot cannot fully deliver, and the reason pilots should become contracts.
Two things expand it directly:
Co-regulation. Nervous systems borrow regulation from each other. Coffee & Connect events and private dinners are not lead generation with a wellness veneer — co-regulation is a capacity mechanism. That reframes community from marketing channel to product feature.
Cycle-awareness. Capacity is not fixed. The same person has materially different capacity across the menstrual cycle and through perimenopause. Somarae's women's health integration lands here specifically — not spread vaguely across the framework.
The delivery ladder
| Capacity | Delivered by | What that means for a buyer |
|---|---|---|
| Signal | App, state check-ins | Self-serve. Scales at near-zero marginal cost. |
| Shift | Micro-practices, Soma sessions | Self-serve. Scales at near-zero marginal cost. |
| Recovery | Work design and placement | Requires organizational change. Pilot territory. |
| Capacity | Time and community | Compounds. The renewal argument. |
This is why handing out an app does not solve burnout. An app can deliver Signal and Shift — genuinely, and at scale. It cannot reschedule your meetings, and it cannot give your leaders a regulated nervous system to co-regulate with.
Two of four is not a failure of the software. It is the reason the last wellness app did not work.
Nervous System Intelligence at the organizational level
An individual can build NSI alone. It just costs them more than it should. Organizations either create the conditions for regulation or they quietly tax it — and most are taxing it without knowing.
Three conditions determine whether a workforce can regulate:
Load
The actual demand the organization places on people — meeting density, context-switching, decision volume, always-on expectations. Most burnout interventions treat load as fixed and ask people to cope better.
Recovery design
Whether return-to-baseline is built into how work happens, or left to evenings and weekends. Recovery is not time off. It is whether the working day contains any.
Co-regulation
Whether leaders regulate their teams or transmit their dysregulation to them. Nervous systems are not private. A dysregulated executive is an organizational input, and it moves down the org chart faster than any memo.
Regulation does not happen in isolation. It deepens in community — which is why NSI is an organizational design question, not a personal responsibility one.
Why this matters at work
The manager crisis
Manager engagement fell five points in a single year, from 27% to 22% between 2024 and 2025, and is down nine points since 2022. Gallup's "engagement premium" for managers has essentially vanished.
Source: Gallup, State of the Global Workplace: 2026
This is the co-regulation argument in a number. The people with the widest transmission range are the ones dysregulating fastest.
The scale
Global employee engagement fell to 20% in 2025, its lowest level since 2020, costing the world economy an estimated $10 trillion in lost productivity — roughly 9% of global GDP.
The mechanism
Across all 15 countries and every workplace dimension assessed, toxic workplace behavior was the single biggest predictor of both burnout symptoms and intent to leave — by a large margin. McKinsey's conclusion was that employers are overlooking the role of the workplace itself and underinvesting in systemic solutions.
Source: McKinsey Health Institute, "Addressing employee burnout: Are you solving the right problem?" (2022)
Burnout is a design problem, not a coping problem.
The follow-through
In a later survey of more than 30,000 employees across 30 countries, employees experiencing toxic behavior at work reported burnout symptoms at a 62% higher rate, with holistic health scores 7% lower. 22% reported burnout symptoms overall.
The pattern underneath all of it is the same. Organizations keep investing in the top of the stack — communication frameworks, mindset training, engagement surveys — while the layer underneath, the one that determines whether any of it is accessible under pressure, goes unaddressed.
The science
NSI is not a new biology. It is a practical organization of research that already exists, applied to a context that has largely ignored it.
Breathwork produces measurable state change.
In a randomized controlled trial of 108 participants, five minutes of daily breathwork over 28 days improved mood and reduced physiological arousal — with exhale-focused cyclic sighing outperforming an equivalent period of mindfulness meditation on both mood improvement and respiratory rate reduction.
Yilmaz Balban, M., Neri, E., Kogon, M. M., Weed, L., Nouriani, B., Jo, B., Holl, G., Zeitzer, J. M., Spiegel, D., & Huberman, A. D. (2023). Brief structured respiration practices enhance mood and reduce physiological arousal. Cell Reports Medicine, 4(1), 100895. https://doi.org/10.1016/j.xcrm.2022.100895
The effect holds across the literature.
A meta-analysis of 12 randomized controlled trials covering 785 adults found breathwork associated with significantly lower self-reported stress than non-breathwork controls, with a small-to-medium effect size (g = −0.35, 95% CI −0.55 to −0.14, p = 0.0009).
Fincham, G. W., Strauss, C., Montero-Marin, J., & Cavanagh, K. (2023). Effect of breathwork on stress and mental health: A meta-analysis of randomised-controlled trials. Scientific Reports, 13(1), 432. https://doi.org/10.1038/s41598-022-27247-y
Regulation and executive function are physiologically linked.
Heart rate variability is associated with prefrontal function — attention, working memory, inhibitory control. A systematic review of 20 studies covering 19,431 participants found higher HRV associated with better cognitive performance. The capacities leadership depends on are physiologically gated.
Thayer, J. F., Hansen, A. L., Saus-Rose, E., & Johnsen, B. H. (2009). Heart rate variability, prefrontal neural function, and cognitive performance. Annals of Behavioral Medicine, 37(2), 141–153. https://doi.org/10.1007/s12160-009-9101-z
Forte, G., Favieri, F., & Casagrande, M. (2019). Heart rate variability and cognitive function: A systematic review. Frontiers in Neuroscience, 13, 710. https://doi.org/10.3389/fnins.2019.00710
Three limits worth stating plainly
Polyvagal theory, which informs much of the somatic field including this work, is a theoretical framework with genuine scientific debate around parts of its physiological account. NSI does not depend on it. The interventions have their own evidence base.
The breathwork meta-analysis found significant effects in subclinical and high-stress populations, and non-significant effects in clinical populations. NSI is built for the former. It is not a clinical intervention and does not replace care.
Most studies in that meta-analysis carried a moderate risk of bias, and effect sizes are small-to-medium rather than dramatic. Anyone promising transformation from a breathing exercise is overselling the evidence.
How NSI relates to IQ and EQ
| What it measures | Where it breaks down | |
|---|---|---|
| IQ | Cognitive processing | Under threat, access drops |
| EQ | Reading and managing emotion | Becomes performance when the body is dysregulated |
| NSI | State recognition and deliberate change | — |
NSI does not replace either. It determines whether you can reach them.
Emotional intelligence assumes you have access to your own regulation. Most frameworks are built on that assumption and never check it. When the nervous system is in a threat state, EQ does not disappear — it goes performative. You say the right thing while your body says something else, and everyone in the room registers the mismatch even if nobody names it.
That is not an EQ failure. It is a state problem wearing an EQ costume.
Why this is different for women
Emotional intelligence. Executive presence. Resilience frameworks. All of it designed in boardrooms, not labs.
And built on a research base that, for decades, was not required to include female physiology at all. Women had been included in NIH-funded clinical research since the early 1990s. But the foundational layer underneath it — the basic and preclinical research where mechanism gets established — relied heavily on male animals and male cells. The NIH's own assessment was that this over-reliance risked obscuring key sex influences on health processes and outcomes. It was not until applications due on or after January 25, 2016 that NIH began requiring sex to be accounted for as a biological variable in the design, analysis, and reporting of that foundational research.
Which means the frameworks built on top of that layer inherited its gap.
Women have been trying to regulate, perform, and lead using models calibrated on someone else's physiology. That was never a personal failure. It was a systemic mismatch.
What we now know changes the design brief: regulation pathways, stress response, and recovery capacity all shift across the menstrual cycle, pregnancy, perimenopause, and menopause. A regulation strategy that ignores this is not neutral. It is built for part of the workforce and applied to all of it.
NSI accounts for it. That is not an add-on to the framework — it is part of what makes it accurate.
Source: NIH Guide Notice NOT-OD-15-102, Consideration of Sex as a Biological Variable in NIH-funded Research, released June 9, 2015, effective for applications due on or after January 25, 2016 — grants.nih.gov
How organizations build it
NSI is trainable. It is also measurable, which is what makes it fundable.
Somarae runs founder-led pilots with organizations ready to treat regulation as infrastructure. Each begins with an NSI baseline audit, moves through a full in-person immersive training, and continues with live virtual sessions, biweekly check-ins, and a leadership dashboard — closing with a post-pilot assessment against baseline.
Up to 25 participants. Founding-partner pricing while available.
Frequently asked questions
What is Nervous System Intelligence?
Nervous System Intelligence (NSI) is the measurable capacity to recognize your nervous system's state and change it on purpose — in individuals, and in the organizations they work inside. It treats regulation as trainable infrastructure rather than a wellness perk. NSI has four individual capacities: Signal, Shift, Recovery, and Capacity. At the organizational level it is shaped by three conditions: load, recovery design, and co-regulation.
Is Nervous System Intelligence the same as nervous system regulation?
No. Regulation is the act — shifting out of a threat state. NSI is the broader capacity: noticing the state, having a tool that works, recovering at speed, and knowing your ceiling. Regulation maps to one of the four components, Shift. You can be capable of regulating and still have low NSI if you never notice you need to.
What practices build Nervous System Intelligence?
Different practices train different capacities. Body scanning and state check-ins build Signal. Cyclic sighing, extended-exhale breathing, vocal toning, tapping, and shaking build Shift. Recovery is built not by new practices but by frequency and placement — brief practices distributed through the working day rather than one long session weekly. Capacity is the compounding result of the other three, expanded further by co-regulation in community.
How is NSI different from emotional intelligence?
Emotional intelligence assumes you have access to your own regulation. NSI is what determines whether you do. When the nervous system is in a threat state, EQ tends to become performative rather than integrated — the words are right and the body contradicts them. NSI does not replace EQ. It is the layer underneath that makes EQ reachable under pressure.
Can Nervous System Intelligence be measured?
Yes, across several channels: heart rate variability trend as a recovery marker, pre/post state change around specific practices, interoceptive accuracy for the Signal component, and performance under load for capacity. Somarae pilots begin with an NSI baseline audit and close with a post-pilot assessment against that baseline, so change is measured rather than reported.
Who coined the term Nervous System Intelligence?
The phrase has emerged independently in more than one place as the somatic and organizational fields converged. A conceptual framing was published as a preprint by Shannon E. Eastman in 2025, who has since renamed that body of work Human Operating System Architecture. Somarae's contribution is distinct: the enterprise application of NSI — how organizations measure it, build it, and design for it at scale, with women's physiology accounted for rather than assumed.
Why does NSI matter for leaders specifically?
Because dysregulation is contagious and leaders have the widest transmission range. Nervous systems co-regulate whether or not anyone intends it, so an activated executive becomes an organizational input. Gallup found manager engagement fell five points in a single year and nine points since 2022 — the group with the most influence over team state is destabilizing fastest.
Does NSI differ for women?
Yes. Regulation pathways, stress response, and recovery capacity shift across the menstrual cycle, pregnancy, perimenopause, and menopause. The foundational research layer underpinning most workplace resilience frameworks was not required to account for sex as a biological variable until 2016. A regulation strategy that ignores this is not neutral; it is calibrated for part of the workforce and applied to all of it.
How do organizations start?
With a baseline. Somarae pilots begin with an NSI baseline audit across the team, then a founder-led in-person immersive training, live virtual sessions, biweekly check-ins, and a leadership dashboard, closing with a post-pilot assessment. Pilots run up to 25 participants.
Cite this page
APA
Bacol, M. (2026). Nervous System Intelligence: Definition, science, and organizational application. Somarae. https://somarae.co/nervous-system-intelligence
Plain text
Marian Bacol, "Nervous System Intelligence," Somarae, 2026. https://somarae.co/nervous-system-intelligence
References
Peer-reviewed
- 1.Yilmaz Balban, M., Neri, E., Kogon, M. M., Weed, L., Nouriani, B., Jo, B., Holl, G., Zeitzer, J. M., Spiegel, D., & Huberman, A. D. (2023). Brief structured respiration practices enhance mood and reduce physiological arousal. Cell Reports Medicine, 4(1), 100895. https://doi.org/10.1016/j.xcrm.2022.100895
- 2.Fincham, G. W., Strauss, C., Montero-Marin, J., & Cavanagh, K. (2023). Effect of breathwork on stress and mental health: A meta-analysis of randomised-controlled trials. Scientific Reports, 13(1), 432. https://doi.org/10.1038/s41598-022-27247-y
- 3.Thayer, J. F., Hansen, A. L., Saus-Rose, E., & Johnsen, B. H. (2009). Heart rate variability, prefrontal neural function, and cognitive performance: The neurovisceral integration perspective on self-regulation, adaptation, and health. Annals of Behavioral Medicine, 37(2), 141–153. https://doi.org/10.1007/s12160-009-9101-z
- 4.Forte, G., Favieri, F., & Casagrande, M. (2019). Heart rate variability and cognitive function: A systematic review. Frontiers in Neuroscience, 13, 710. https://doi.org/10.3389/fnins.2019.00710
- 5.Thayer, J. F., Åhs, F., Fredrikson, M., Sollers, J. J. III, & Wager, T. D. (2012). A meta-analysis of heart rate variability and neuroimaging studies. Neuroscience & Biobehavioral Reviews, 36(2), 747–756. https://doi.org/10.1016/j.neubiorev.2011.11.009
Policy
- 6.National Institutes of Health. (2015). Consideration of Sex as a Biological Variable in NIH-funded Research (NOT-OD-15-102). https://grants.nih.gov/grants/guide/notice-files/not-od-15-102.html
Industry
- 7.Gallup. State of the Global Workplace: 2026. https://www.gallup.com/workplace/349484/state-of-the-global-workplace.aspx
- 8.McKinsey Health Institute. (2022). Addressing employee burnout: Are you solving the right problem? https://www.mckinsey.com/mhi/our-insights/addressing-employee-burnout-are-you-solving-the-right-problem
- 9.McKinsey Health Institute. (2023). Reframing employee health: Moving beyond burnout to holistic health. https://www.mckinsey.com/mhi/our-insights/reframing-employee-health-moving-beyond-burnout-to-holistic-health
Somarae's cycle and hormonal-stage personalization has its own citation set — see the full scientific references.