Codex · Mind
Emerging evidence · promising signals; trials small or young
Nadi Shodhana — Alternate-Nostril Breathing
Slow alternate-nostril breathing calms the nervous system, calms the nervous system and, in small trials, is associated with lower blood-pressure readings and sharper attention within minutes.
How it works
Slow nasal breathing at ~5–6 breaths/minute increases vagal (parasympathetic) tone, generates phase-locked oscillations in emotion-regulating brain regions, and shifts autonomic balance away from fight-or-flight.
The practice
Close the right nostril, inhale left for 4 counts; close left, exhale right for 4; inhale right; exhale left. That is one round. Practice 5–10 rounds, ideally before meditation or during stress.
The tradition
Hatha Yoga Pradipika; classical pranayama
Cautions
- ⚠ Never force or strain the breath.
- ⚠ If dizzy, return to normal breathing.
Related in the Codex
Bhramari — Humming-Bee Breath
Humming on the exhale in small trials reduces anxiety scores and slows heart rate.
The 4-7-8 & Extended-Exhale Breath
Breath patterns with exhales longer than inhales down-shift arousal in most people who try it and prepare the body for sleep.
Ashwagandha — The Steadying Root
Ashwagandha meaningfully lowers perceived stress and cortisol and improves sleep quality in randomized trials.
Abhyanga — Warm-Oil Self-Massage
Daily warm-oil self-massage nourishes skin, calms the nervous system, and doubles as a mindfulness ritual.
General wellness information for educational purposes — not medical advice, diagnosis, or treatment. Evidence grades are Cheerayu's honest reading of the literature at the time of writing. Speak with a qualified clinician about your own situation, especially if you are pregnant, nursing, taking medication, or managing a condition. Terms.