Cyclic Sighing Timer — Free Online Tool
Huberman Lab protocol — double inhale + long exhale, 5min for mood
Cyclic sighing: double nasal inhale + long mouth exhale. Stanford 2023 (Huberman lab) showed 5min daily outperforms box breathing for mood. Free timer.
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Cyclic Sighing Timer
Cyclic sighing is the breath protocol that came out on top in the 2023 Stanford study from the Andrew Huberman lab (Balban et al., Cell Reports Medicine). Over 28 days, 5 minutes per day of cyclic sighing produced greater mood improvement and lower respiratory rate than box breathing, cyclic hyperventilation, or mindfulness meditation. The pattern is simple: double nasal inhale, long mouth exhale. The first inhale fills the lungs about halfway, the second short inhale tops them off, and the long exhale (about twice as long as the total inhale) activates the parasympathetic nervous system.
How the visualization works
The waveform at the top of the frame shows the signature 2-1-6 second pattern: a steady rise for 2 seconds (inhale 1), a sharper rise for 1 second (the "double" inhale), then a slow 6-second fall (exhale). The playhead line shows where you are in the cycle. The amber wisps flow UP into the nostrils during both inhales, and the mouth opens with a long stream flowing DOWN during the exhale. One full cycle is 9 seconds. The default target is 33 cycles for a 5-minute session.
How to use this tool
- 1
Sit comfortably
Sit upright. You will do this for 5 minutes once per day for best results.
- 2
Inhale 1 (2s)
Slow inhale through your nose, filling lungs to about half capacity. The first inhale wisp flows up.
- 3
Inhale 2 (1s)
A second, sharper inhale through your nose to top off the lungs (the "double inhale"). The second wisp flows up.
- 4
Exhale long (6s)
Slow, complete exhale through your mouth — twice as long as your inhale. The mouth opens, a long stream flows down.
- 5
Repeat for 5 minutes
About 33 cycles. Studies show this protocol outperforms box breathing for mood when done daily.
Frequently Asked Questions
What is cyclic sighing?
Where does the research come from?
Why does it work?
How long should I practice?
Does this tool store my data?
Key Takeaways
- Cyclic Sighing Timer is a free, browser-based calculator tool — huberman lab protocol — double inhale + long exhale, 5min for mood.
- No signup, no downloads, no file uploads — your data stays on your device.
- Works on desktop, tablet, and mobile. Install as a PWA for offline access.
How to Use Cyclic Sighing Timer
- Open the tool: Launch Cyclic Sighing Timer on Toololis — no account or download needed.
- Enter your data: Paste text, enter values, or select a file directly in your browser.
- Get instant results: Everything is processed locally — results appear immediately.
- Copy or download: Save your output or share it. Bookmark for quick access next time.
Cyclic Sighing Timer — Quick Facts
- Price
- Free — no limits, no watermarks, no paywalls
- Privacy
- 100% browser-based — no data is sent to any server
- Platform
- Any modern browser on desktop, tablet, or mobile
- Category
- Calculator Tools on Toololis
- Offline
- Works offline after first visit (Progressive Web App)
| Feature | Details |
|---|---|
| Tool | Cyclic Sighing Timer |
| Category | Calculator |
| Signup Required | No |
| File Upload | None — processed in browser |
| Mobile Support | Fully responsive |
| Cost | Free forever |
Why Use Cyclic Sighing Timer?
You should try Cyclic Sighing Timer for a quick, private way to huberman lab protocol — double inhale + long exhale, 5min for mood. All processing happens in your browser. Your files and data never leave your device. According to web.dev, client-side processing is the gold standard for privacy.
On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.