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Anxiety & Acute Stress Toolkit

A short, physiologically grounded toolkit (the physiological sigh, exhale-focused breathing, and a few foundational habits) for managing everyday anxiety and acute stress spikes in real time, alongside professional care for diagnosed anxiety.

🌊
Andrew Huberman
Neuroscientist · Stanford
Not endorsed · Based on the published work of Andrew Huberman
Daily time
5 min/day + as needed
Steps
5
Difficulty
Beginner
Sources
4
View the steps →
What it is

This toolkit draws on Andrew Huberman's work on stress physiology and a Stanford-led randomized controlled trial on brief structured breathing. The physiological sigh is a fast, in-the-moment tool for acute spikes; a short daily cyclic-sighing practice lowers baseline stress over time; and a few foundational habits (light, sleep, caffeine timing) support the nervous system that has to do this regulating every day. None of it diagnoses or treats an anxiety disorder.

Why it works▼
The Stanford RCT found that a single session of cyclic sighing calmed physiological arousal, and that 5 minutes a day of cyclic sighing improved mood and reduced resting breathing rate more than an equivalent amount of mindfulness meditation over 28 days. The physiological sigh (two inhales, one long exhale) is the fastest known voluntary way to shift the body out of a sympathetic (fight-or-flight) state, because the second inhale pops open collapsed alveoli and the long exhale drives a rapid drop in heart rate.
The evidence
Sources
Published work by Andrew Huberman, cited straight to the source: long-form episodes, clips, peer-reviewed papers and their own writing. Select any to view it here.
1
Tools for Managing Stress & Anxiety — Huberman Lab, Ep 10
Podcast
2
Reduce Anxiety & Stress with the Physiological Sigh
Video
3
Tools for Managing Stress & Anxiety (show notes)
Article
4
Brief structured respiration practices enhance mood and reduce physiological arousal
Paper · Cell Reports Medicine, 2023
Source viewer
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The protocol
Clinical strong human trials Mixed some or emerging evidence Commercial weak or unproven, sold widely Equipment / Test not an evidence claim How we grade →
In the moment

Physiological sigh for acute spikes

Two inhales through the nose, one long exhale through the mouth; repeat 1 to 3 cycles as needed

The fastest voluntary way to reduce physiological arousal in real time; usable anywhere, with no equipment.

Huberman Lab, Ep 10
For this step
No product needed
Daily

Cyclic sighing practice

5 min/day, exhale-focused breathing

In the Stanford RCT, 5 min/day of cyclic sighing outperformed an equivalent dose of mindfulness meditation on mood and resting breathing rate over 28 days.

Cell Reports Medicine, 2023
For this step
No product needed
Foundation

Anchor the basics that lower your baseline: morning sunlight, consistent sleep, and a short NSDR or meditation session

Daily; see the AM and sleep protocols for detail

A well-regulated circadian rhythm and adequate sleep lower baseline stress reactivity, making the in-the-moment tools work better.

Huberman Lab, Ep 10
For this step
No product needed
Daily

Watch caffeine and stimulant timing

Delay first caffeine 90 to 120 min after waking; cap intake and avoid it late in the day

Excess or mistimed caffeine amplifies physiological arousal and can worsen anxiety symptoms.

Huberman Lab, Ep 10
For this step
No product needed
When to seek help

Treat this as a real-time coping toolkit, not a treatment for a diagnosed anxiety disorder

Ongoing awareness

These tools help regulate acute stress and can support daily resilience, but they do not replace therapy or medication for clinical anxiety.

Huberman Lab, Ep 10
For this step
No product needed
Is this for you?
Good fit if
  • Anyone who wants a fast, free tool for acute stress or anxiety spikes
  • People building a daily stress-resilience habit alongside therapy or medication
  • Beginners: no equipment, no cost, 5 minutes a day
Cautions
  • Informational only, not medical advice and not a treatment for a diagnosed anxiety disorder
  • These tools support, and do not replace, therapy or medication prescribed by a professional
  • If you have persistent or severe anxiety, consult a qualified mental-health professional
  • If you are in crisis or having thoughts of self-harm, contact the 988 Suicide & Crisis Lifeline (US) or your local emergency services
Related protocols
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Morning
Huberman AM Protocol
Based on the work of Andrew Huberman
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Sleep
Sleep Architecture Reset
Based on the work of Matthew Walker
Update history
  • July 3, 2026 Protocol published.
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Not medical advice. This page is for education only and is not a substitute for professional medical care. Consult a qualified clinician before changing your health routine.
Independent curation. YourProtocol.ai is an independent platform. This protocol is based on the publicly available work of Andrew Huberman and is not created, reviewed, endorsed by, or affiliated with Andrew Huberman or Neuroscientist · Stanford.

Anxiety & Acute Stress Toolkit
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