Intro
Here's a wild fact: how you breathe while you sleep may matter more than how you breathe awake. And most of us do it wrong — mouth open, air rushing in, drying out and under-oxygenating our bodies for 8 hours straight.
Journalist James Nestor spent 10 days with his nose plugged for a Stanford study. His blood pressure spiked, his sleep collapsed, and he snored for hours a night. Then he switched to nasal breathing — and it all reversed.
This week: why the nose wins, and how to make the switch stick. ↓
🫁 Breathing Technique: Nasal Breathing (+ the mouth-tape test)
Through the day, keep your lips gently sealed and breathe through your nose — even during light exercise.
Notice when you default to your mouth (stress, screens, effort) and gently switch back.
At night, try a small piece of skin-safe tape vertically over the center of your lips (never after drinking or if unwell).
Start with 20-minute daytime sessions before trying it overnight.
Give it two weeks — nasal breathing is a habit you rebuild.
Best for: snoring, dry mouth, restless sleep, and daytime focus.
🤖 AI Tool of the Week
Track whether the switch is working — let AI read your sleep data:
"I'll paste my sleep data from the last two weeks — time asleep, deep sleep, awakenings, and resting heart rate. I'm switching from mouth to nasal breathing at night. Tell me whether the trend is improving, what to watch, and one adjustment to make this week."Quantum Computing Goes Mainstream
📊 Longevity Insight: The nose is a filter, humidifier, and pharmacy
Your nose filters, warms, and humidifies air, and releases nitric oxide that boosts circulation. But there's more: nasal breathing paces your breath slower and deeper, keeping more CO₂ in your blood — which actually helps oxygen release into your tissues (the Bohr effect). Mouth breathing floods you with air but delivers less usable oxygen. More air, less benefit.
⚡ 5-Minute Quick Win
Right now, close your mouth and take 10 slow breaths in and out through your nose only. Feel how much calmer it is. Set one phone reminder today that just says "nose."
Affiliate (Oura)
Box text: Curious if nasal breathing is actually improving your sleep? The Oura Ring tracks your nightly breathing rate, deep sleep, and resting heart rate — so you can see the change, not just feel it. Button words: Check out Oura Button link: https://ouraring.com/affiliates Small line: We may earn a small commission — never costs you extra.
Button words: Open the BreathIQ guide Button link: https://breathiq.joinvitaliq.com
Sign-off
Breathe smart, Gee — Founder, VitalIQ