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It’s okay to breathe out — tap the screen to continue early.
How you sit or stand changes how much your diaphragm can move. More space = fuller, easier breath.
The diaphragm needs room to drop downward on inhale. Slouching folds the torso and leaves less room — breath stays shallow in the upper chest. A long spine + soft belly lets the diaphragm move freely, so each breath can be deeper without forcing it.
For Nasal Breathing (¼-second cycles): mouth closed, jaw soft, nose only. Stay upright. Continuous rapid nasal cycles with no hold mid-stream; at the end of the session a full 5s inhale + 15s hold closes the practice.
During a breathwork session, mouth breathing is fine — and often useful. An open mouth lets air move faster and gives the lungs a fuller, quicker expansion on big inhales or rapid cycles. Use it when the pattern asks for volume or speed.
Everyday life is different. Habitual mouth breathing outside of practice skips the nose’s job of filtering, warming, and humidifying air. Reviews link chronic oral breathing with poorer respiratory-muscle and brain-function patterns, headaches, sleep issues, and changes in head and jaw posture. Keep sessions flexible; keep daily breathing nasal when you can.
Science: nasal vs mouth breathing — respiratory muscle and brain function (review)
Find a comfortable seat, kneel, or lie back — choose the shape that lets the breath move freely.
Breathwork is not just “calm vibes” — it has measurable effects on the autonomic nervous system, heart rate, stress chemistry, and brain state. These Huberman Lab resources break down the physiology and neuroscience behind the patterns you practice here.
Breathing for Stress Reduction
Huberman’s stress-reduction section: the physiological sigh (double nasal inhale, long mouth exhale) as the fastest real-time calm tool, plus why cyclic sighing lowers stress, resting heart rate, and improves mood — grounded in lab and clinical work.
Huberman Lab · NewsletterHow to Breathe Correctly for Health, Mood & Performance
Full Huberman Lab episode on the biology of breathing: oxygen vs CO₂, nose vs mouth, physiological sighs, box breathing, cyclic hyperventilation, and how deliberate breath shifts brain and body state for stress, focus, and learning.
Huberman Lab · EpisodeTools for Managing Stress & Anxiety
How breathing sits at the interface of mind and body: using the physiological sigh to downshift arousal, why heart rate lags the breath by ~20–30 seconds, and how body-first tools free the mind to regain control under stress.
Huberman Lab · EpisodeBreathing Science with Dr. Jack Feldman (Essentials)
Neuroscience of the breath: diaphragm, brainstem circuits, why we naturally sigh about every five minutes (to reinflate alveoli), and the physiological basis of deliberate breathing for mental and physical health.
Huberman Lab · EssentialsRelaxation Maxxing
Relaxation and awareness tool — not medical advice.
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