The 30-Day Sonu Nasal Breathing Challenge — Rediscover Your Vitality
THE SONU NASAL BREATHING CHALLENGE · 30 DAYS

30 days.
One sentence a day.
Rediscover your vitality.

Your nose isn’t just a passage — it’s the most underused organ in your body. Take the challenge: a single spoken sentence each day reveals your Nasal Clarity Score, a wellness measure of how clearly air is moving through your nose. Then thirty nights with Sonu help rebuild the breathing your body was designed for.

NO HARDWARE NEEDED FOR THE SCORE  ·  <3 SEC PER READING

87
Nasal Clarity Score
Breathing freely
How it begins

Three steps. Under two minutes.

No probes. No bloodwork. No clinic visit. Just your voice — and a wellness score that tells you, in one number, how freely you’re breathing.

01

Download the Sonu app

Free on iOS and Android. Sign in, complete a 30-second profile, and you’re ready to take your first reading.

› 30 SECONDS
02

Say one sentence

Speak the nasal-loaded phrase “Man simmers on the moon” — under 3 seconds. Our acoustic model listens to the resonance of every syllable.

› <3 SECONDS
03

See your Nasal Clarity Score

A 0–100 wellness score, plus estimated oxygen efficiency and nitric oxide delivery — instantly.

› INSTANT RESULT
Explore the science

Drag the dial. Watch your body change.

Your Nasal Clarity Score is a wellness proxy for the volume of air you can move through your nose. Each value maps to two physiological estimates derived from peer-reviewed respiratory models — the oxygen your lungs can absorb, and the nitric oxide your sinuses deliver.

Nasal Clarity Score
87
A wellness measure that combines voice resonance with how blocked you feel.
FULLY CLEAR
Inhaled O₂ Efficiency
97%
eIO₂ — estimated % of your maximum nasal-breathing oxygen uptake available now.
OPTIMAL
Nitric Oxide Delivery
79%
eNO — estimated fraction of sinus NO reaching the lungs · ~155–860 ppb.
OPTIMAL
Severe congestion Fully clear
0255075100
Very low
Low
Moderate
Good
Optimal
What this means right now

Your nose is moving air freely. Estimated oxygen uptake is near-optimal and your sinuses are delivering a strong dose of antimicrobial nitric oxide to your lungs.

Estimated breathing capacity: ~90% of your personal best.

Model basis. eIO₂ = 82 + 18·(NCS/100)0.7 — anchored to nasal-vs-oral oxygen uptake studies (Swift et al., Acta Otolaryngol. 1988; Cole, J Otolaryngol 2000). eNO = (NCS/100)0.85 · [0.30 + 0.70·(NCS/100)1.3] — anchored to CFD-modeled nasal NO transport (Dillon et al., 2020), measured sinus NO production of 200–1,100 ppb (Lundberg et al., Nat Med 1995), and ostial obstruction studies (Kharitonov et al., 1997; Stammberger, 1991).
Wellness estimates derived from your Nasal Clarity Score. Not a direct measurement, not a medical device, not intended to diagnose, treat, cure, or prevent any disease.
The hidden cost

What sub-optimal scores quietly take from you.

When your Nasal Clarity Score drops below 70, three systems pay the price — usually before you notice. The literature is clear.

Cognitive sharpness

2–3× faster

Memory recall and emotional discrimination are measurably 2–3× faster during nasal inhalation than oral. Nasal breathing entrains hippocampal and amygdala oscillations that drive learning and recall — a pathway that disappears when you mouth-breathe.

Zelano et al., J Neurosci 2016 · Perl et al., Nat Hum Behav 2019 · Heck et al., Front Neural Circuits 2017

Immune defense

40–60% less NO

Your sinuses produce 200–1,100 ppb of antimicrobial nitric oxide — among the highest concentrations in the body. Congested patients show 40–60% lower nasal NO, weakening your first-line defense against airborne viruses, bacteria, and fungi.

Lundberg et al., Nat Med 1995 · Kharitonov et al., ERJ 1997 · Martel et al., Microbes Infect 2020

Restorative sleep

snoring risk

Chronic nighttime nasal congestion triples the risk of habitual snoring and is independently linked to sleep-disordered breathing. Experimentally induced nasal obstruction drops mean SpO₂ by 2–4% during sleep and increases apnea events.

Young et al., Arch Intern Med 2001 · Fitzpatrick et al., ERJ 2003 · Camacho et al., Laryngoscope 2015
The challenge engine

Sonu is how you actually win the 30 days.

Measuring is one thing. Restoring is another. Sonu is the world’s first FDA-authorized personalized acoustic resonance wearable — clinically built for allergies, rhinitis, and chronic nasal congestion. Wear it. Sleep. Wake up to a higher score.

Personalized acoustic resonance tuned to your sinuses
FDA-authorized for relief of nasal congestion
No drugs, no sprays, no side effects
Track your Nasal Clarity Score climb every morning
Join the breath
#SonuChallenge

Share your score. Watch it climb.

Post your day-1 Nasal Clarity Score. Share your day-30 transformation. Tag @SoundHealth and join thousands of breathers rediscovering what their bodies were built for.

Weekly community leaderboard

Biggest 7-day score climbs win Sonu credits.

Anonymous, opt-in, just for fun. Top 10 every Monday on @SoundHealth stories.

Opt In

Your nose has been
speaking all along.

One sentence. Thirty days. A body that breathes the way it was built to. Take the challenge today — and see how high your score can climb.