6 Evidence-Based Tools for a Nervous System Reset

Stress has been called the modern-day equivalent of smoking. Work pressure, financial worry, relationship friction, too much screen time, poor sleep, processed foods, alcohol: all of it piles onto your nervous system. Over time, the system gets locked into what’s known as a sympathetic dominant state, stuck in “fight or flight”, and unable to easily shift into recovery mode.

A nervous system reset is the process of correcting that imbalance, shifting your resting state away from chronic stress activation and toward the parasympathetic state, or “rest and digest”. When you do this successfully, many symptoms start to resolve, and you’ll begin to experience better sleep, less anxiety, improved digestion, and clearer thinking.

Signs Your Nervous System Is Overloaded

When your nervous system is stuck in a constant state of stress, it can affect nearly every part of your physical and mental health. Common signs of excess stress include:

• Feeling tired but unable to relax 
• Anxiety or feeling like you can’t “turn off”
• Irritability and low tolerance for stress, even exercise
• Poor sleep, despite feeling exhausted
• Brain fog and difficulty concentrating
• Digestive symptoms like irritable bowel syndrome (IBS) or indigestion
• Chronic low-grade inflammation

Heart Rate Variability: Tracking Nervous System Health

Heart rate variability (HRV) is one of the most useful objective measures of nervous system health 1. It tracks how flexibly your heart rate moves between beats. Higher variability means your nervous system can shift into high gear when needed and recover efficiently when it’s not. Low variability is a signal that your nervous system is not recovering well.

If you have an Oura ring or a similar wearable, tracking your HRV over time gives you real data on whether interventions are working. Most people see a perceptible shift after about a month of consistent practice.

6 Tools to Reset Your Nervous System

These tools aren’t general lifestyle tips. They are specific, clinically grounded interventions, some with robust research behind them and some with early but promising evidence. A few can be stacked together so you get the most benefit in the least amount of time.

1. Vagal Nerve Stimulation Devices

This is one of the most researched interventions for nervous system reset, yet one of the most underutilized.

Vagal nerve stimulation (VNS) devices are worn on or around the ear and use a gentle electrical impulse to stimulate the vagus nerve, sending calming signals to brain regions involved in stress and emotional regulation. These signals regulate the balance between your sympathetic (stress) and parasympathetic (recovery) nervous systems. 

Importantly, much of the research here uses placebo-controlled designs, comparing a fake device to a real one to help account for placebo effects. Results are consistently positive.

What does the research show? Vagal nerve stimulation devices show documented improvements in:

• Anxiety and depression 2 3
• Autoimmunity 4
• Insomnia 5
• Fatigue 6 7
• High blood pressure 8
• Silent reflux (laryngopharyngeal reflux) 9
• Gut motility 10 11
• Inflammation 12

My two clinician-recommended VNS devices:

• Neuropod (~$900): Clips to one ear, easiest to use, most research behind it. Turn it on, press a couple of buttons, and you’re in a session.
• VaguStim (~$370): Bilateral (both ears), slightly more setup required, but a solid option if budget matters.

Wear for 5 to 20 minutes, once or twice daily. Don’t expect an overnight transformation. Most studies show meaningful benefit at the one-month mark.

There are also other methods for improving vagal tone. To learn more, check out our article on how to do a vagus reset. 

2. Resonance Breathing

Resonance breathing is slow, controlled breathing at around 5 to 6 breaths per minute. It’s one of the simplest and most validated tools for nervous system regulation. Multiple studies have documented that it reliably increases HRV 13. One small study found that just seven minutes of resonance breathing offered greater benefits than meditation: less anxiety, more feelings of calm, and more energy 14 15.

That last part is worth emphasizing: If you’ve tried meditation and find your mind wanders, you feel more stressed, or it just doesn’t click, resonance breathing is a legitimate, research-backed alternative worth trying.

My preferred app is simply called Breathe. You breathe in and out in sync with a ball that expands and contracts, with an optional audio guide. It gives you something to follow, which takes away the “am I doing this right?” anxiety that derails so many people during meditation.

One study found that combining resonance breathing simultaneously with vagal nerve stimulation produced a synergistic effect, better results than either alone. So if you’re using a VNS device, run the breathing app at the same time. That’s 10 to 20 minutes of compounded benefit.

3. Electrolytes and Sodium Intake

This one surprises people, but there’s real science here.

Very low sodium intake may increase sympathetic nervous system activity in some people. When sodium intake is too low for the body’s needs, the body may compensate by increasing stress signaling to help maintain blood pressure and circulation. Some studies have found that sodium restriction can reduce HRV and increase markers of sympathetic activity 16.

The target for most people is 2 to 3 grams of sodium per day. If you have POTS (postural orthostatic tachycardia syndrome), or if you frequently get dizzy when standing up quickly, your target could be 3 to 5 grams and sometimes as high as 12 grams per day. These individuals have difficulty retaining sodium, tend to have chronically low blood volume, and need more to maintain stability.

Note: If you have hypertension (high blood pressure), it’s important to consult your medical provider about how much daily sodium is best for you. 

Hydration matters here, too. Water and electrolytes work together, and simply drinking large amounts of plain water without enough sodium can sometimes worsen fatigue, dizziness, headaches, or “washed out” feelings, especially in active people or those prone to low blood pressure. Many people feel noticeably better when they consistently combine adequate fluids with electrolytes throughout the day rather than only reacting once they feel dehydrated.

For convenience, electrolyte packets can make this much easier. Options like LMNT, Redmond Re-Lyte, and Liquid I.V. are popular on-the-go choices. Some are higher in sodium and better suited for heavy sweaters, athletes, or people with POTS, while others are more balanced for general hydration.

Increasing your electrolyte intake won’t dramatically shift your nervous system on its own, but running consistently low is like quietly keeping the stress dial turned up in the background. It’s worth getting right.

4. Apollo Neuro (Vibration Therapy)

The Apollo Neuro is a wearable device worn on the wrist or ankle that emits gentle pulsing vibrations. The premise is that safe-touch stimulation has a calming effect on the peripheral nervous system, which translates into reduced stress and improved recovery.

Apollo has published two studies: 

• Stressed medical students experienced reduced burnout and emotional exhaustion after 12 weeks of using the Apollo Neuro 17
• Patients with systemic sclerosis had improvements in fatigue, mood, and sleep after using the Apollo Neuro for 15 minutes a day for 4 weeks 18

I’ll be transparent that the research here is early. One study had no control group, and the other used a waitlist control (participants do nothing for now and may receive the treatment later) rather than a sham device (a fake version of the device to rule out the placebo effect). Take those findings with appropriate context.

That said, the device is extremely safe, non-invasive, and runs about $350. In clinical practice, we’ve had patients report genuine calming effects. The general recommendation is to wear it for about 3 hours per day.

Given its safety profile and low barrier to use, you can wear it while working, making it an easy layer of nervous system support throughout the day.

5. Brain Tap (Audio-Visual Stimulation)

I’ll be honest, I was skeptical about this one at first. But after testing it myself and having a colleague try it independently without my prompting, we both had the same unexpected experience: an emotional release about 10 minutes into the session.

Brain Tap is a headset that delivers synchronized light and sound, binaural beats through the headphones paired with LED light pulses in a visor, with a guided meditation running simultaneously. The technology is called audio-visual stimulation, and it aims to push your nervous system toward calmer brainwave patterns.

While Brain Tap’s own studies are internal (I’d prefer peer-reviewed, third-party research), there are independently published randomized controlled trials (RCTs) on audiovisual stimulation documenting improvements in depression, anxiety, anger, tension, fatigue, and confusion 19.

The device costs around $790 plus a ~$30/month membership. A session runs 15 to 20 minutes. The cost is the main drawback. But what I’ve found is that I actually look forward to using it. I’ll do it two or three evenings a week as part of a wind-down routine. An intervention you’ll do consistently is infinitely more valuable than one you won’t.

6. Grounding (Earthing)

Grounding is based on the theory that direct contact with the earth may allow the body to absorb electrons that could help neutralize free radicals and reduce oxidative stress, though this mechanism remains theoretical.

The research here is modest, and I want to be upfront about that. The best trial compared a grounding device to a placebo device, finding significant improvements in insomnia, daytime sleepiness, and stress for those who used a grounding (earthing) bedsheet for 3 weeks 20. Another study found improvements in sleep and stress after 8 weeks of using a conductive mattress pad 21. 

The simplest version is free: Go outside barefoot, walk on grass or sand, or stand at the beach.

For indoor use, grounding mats plug into the ground port of an electrical outlet and allow contact with your feet or hands. I’ve verified using a voltage meter that these mats measurably reduce the electrical charge on the body, so they do something measurable. Sheets for sleeping on are also an option, though I personally noticed some initial sleep disruption with the sheet and am working up to it gradually.

If you’re looking for cloth-based mats rather than plastic-surface options, Aura and Grounding Bear make products worth looking into. The recommended duration is 15 to 30 minutes per day on a mat, or overnight with a sheet if you can tolerate it.

How to Build a Daily Nervous System Reset Routine

None of these tools will produce a dramatic overnight change. What you’re doing is gradually retraining the resting tone of your nervous system over weeks. A realistic and manageable protocol might look like this:

• Morning: VNS device and resonance breathing app simultaneously (15 to 20 minutes) while sitting on a grounding mat. Make sure your sodium and electrolyte intake is dialed in throughout the day.
• During the day: Apollo Neuro on wrist or ankle while working.
• Evening: Brain Tap session 2 to 3 nights per week as part of a wind-down routine.

After about a month, check in on your HRV if you’re tracking it, and pay attention to how your symptoms have shifted.

Nervous System Reset FAQs

How long does a nervous system reset take? 

Most people start noticing a meaningful shift after about one month of consistent practice. This is aligned with what the research shows for tools like vagal nerve stimulation and resonance breathing. It’s not an overnight fix, but the changes are real and measurable.

Can you reset your nervous system naturally, without devices? 

Yes. Resonance breathing, grounding outdoors, adequate sodium intake, quality sleep, time in nature, and reducing overstimulation are all natural approaches. The devices covered here are tools that can accelerate or deepen that process, particularly for people who are already doing the basics and need more support.

What’s the difference between the sympathetic and parasympathetic nervous systems? 

The sympathetic nervous system is your stress response, which gets activated during perceived danger, pressure, or urgency. The parasympathetic nervous system is your recovery mode, sometimes called “rest and digest”. A healthy nervous system moves fluidly between the two. Chronic stress gets you stuck on the sympathetic side, and a nervous system reset is essentially the process of restoring your ability to access both.

Is HRV a good way to track nervous system health? 

Yes. Heart rate variability is one of the best non-invasive proxies we have for nervous system function. Higher HRV generally means better adaptability and recovery capacity. Wearables like the Oura ring make it easy to track over time and see whether your interventions are actually working.

What’s the most evidence-based tool for resetting the nervous system? 

Vagal nerve stimulation devices and resonance breathing have the strongest research support, including sham-controlled randomized trials. Both have been shown to improve HRV, reduce anxiety, and improve sleep. Used together, the research suggests they produce a synergistic benefit.

When Your Nervous System Won’t Reset on Its Own

If you’ve been prioritizing the fundamentals of quality sleep, time outside, minimal overstimulation, good nutrition, and layering in tools like these, and you’re still not feeling like yourself, it’s worth looking deeper. Chronic inflammation, gut imbalances, hidden infections, or hormone dysfunction can all keep the nervous system stuck even when you’re doing everything right.

This is where functional medicine has a lot to offer.If you’d like help identifying what’s keeping your nervous system in a stress state, our clinic is here to help. We work with people who’ve tried many approaches and haven’t gotten the results they were hoping for. We take a thorough, thoughtful method to finding the root cause. Reach out to schedule a consultation, and we’d be happy to work with you.

Dr. Michael Ruscio is a DC, natural health provider, researcher, and clinician. He serves as an Adjunct Professor at the University of Bridgeport and has published numerous papers in scientific journals as well as the book Healthy Gut, Healthy You. He also founded the Ruscio Institute of Functional Health, where he helps patients with a wide range of GI conditions and serves as the Head of Research.