How I Doubled My HRV (What Actually Worked)

In foundational terms:

• Rising HRV over time typically signals improved recovery and parasympathetic (rest-and-digest) activity
• Chronically low or declining HRV often reflects cumulative stress, inflammation, poor sleep, or overtraining

This metric has been especially important for me because of my health history. In my 20s, when my nervous system was severely dysregulated, my HRV was in the single digits…

Over the years, as I healed, it improved, but not to the level I wanted.

So a few years ago, I set a goal:

Could I meaningfully improve my HRV well into my late 40s?

I didn’t know if it would work, but I’m happy to say in under three years, my HRV is now 300%+ higher. Best of all I feel rejuvenated and full of energy.

And now, I want to share what actually worked.

7 Proven Ways To Increase Your HRV (Heart Rate Variability)

1. Resonance Breathing (The Fastest Win)

The most immediate and repeatable improvement came from resonance breathing (breath in for 5 seconds through your nose, and out for 5 seconds through your nose).

I practiced rhythmic breathing (no breath holds) 1–3 minutes, three times per day.

This type of breathing directly stimulates the vagus nerve and improves autonomic balance. Research shows resonance breathing can significantly increase HRV by improving baroreflex sensitivity and parasympathetic tone.

(Lehrer et al., Frontiers in Psychology, 2020)

This was one of the few interventions where I could literally watch my HRV double in real time during the session, and over time, it helped “reset” my nervous system baseline.

2. Nasal Breathing During Sleep

For me, optimizing nasal breathing at night made a noticeable difference.

Depending on the person, this may include:

• Nasal strips
• Gentle mouth taping (only if nasal airflow is adequate)
• Proper pillow height and head alignment

Nasal breathing has been shown to improve oxygen efficiency and autonomic regulation during sleep.

(Hostler et al., Journal of Clinical Sleep Medicine, 2019)

3. Sleep Timing + the 3-2-1 Rule

Sleep quality mattered more than sleep duration.

I followed the 3-2-1 method consistently:

1. Stop eating 3–4 hours before bed
2. No work 2 hours before bed
3. No screens 1 hour before bed

Late-night eating alone had a dramatic (negative) impact on HRV.

Multiple studies show that late meals impair autonomic recovery and reduce overnight HRV.

(St-Onge et al., Sleep Medicine Reviews, 2017)

4. Targeted Evening Supplements

Because my nervous system tends to run “high,” I added targeted support:

• Full-spectrum magnesium (1-2 capsules) and Adrenal Soothe (2 capsules) with dinner
• Low-dose liquid melatonin before bed (1-2 droppers)

Melatonin not only supports sleep onset, but also acts as a powerful antioxidant that helps reduce nighttime oxidative stress and cortisol.

(Reiter et al., Journal of Pineal Research, 2016)

5. Sleeping Cooler

Sleeping in a slightly cooler environment allowed my heart rate to drop faster and stay lower overnight.

Cooler sleep temperatures have been shown to enhance parasympathetic activity and improve sleep efficiency.
(Okamoto-Mizuno & Mizuno, Sleep Medicine Reviews, 2012)

6. Zone 2 Cardio (Even If You Don’t Love It)

This one took time, but it paid off.

I added moderate-intensity cardio 3x per week, gradually building from 20 to 40 minutes.

Endurance training improves mitochondrial efficiency and vagal tone, both strongly correlated with higher HRV over time.

(Plews et al., European Journal of Applied Physiology, 2013)

7. A New Variable I’m Still Testing

I’ve recently added hydrogen-rich water (and a 1/2 tsp of baking soda) to support overnight inflammation reduction and oxidative stress.

Early results are promising, but I’m still collecting data and won’t make a formal recommendation until the full 12-16 week testing window is complete.

The Bigger Picture About HRV

Remember, HRV isn’t about chasing a specific number.

It’s about bettering your best, and building a nervous system that can:

• Adapt to stress
• Recover efficiently
• Improve biological age over time

If I can meaningfully improve HRV after more than a decade of severe nervous system dysfunction, this approach can work for you, too.

I use the Elite HRV app (it’s free) with a Polar H10 heart rate monitor, as well as my Oura Ring for sleep to measure my HRV, so I know exactly what is and what isn’t working.

I’ll continue to share updates as I test new variables, and I stay open to learning from this community as well.