What Is the So Hum Mantra?
So Hum (also written Soham) is a sacred Sanskrit mantra meaning 'I am That' - sah (That, the Supreme) and aham (I am). It affirms the deep truth of Vedanta: that our innermost Self is one with the supreme reality, Brahman.
What makes it special is that it is called the natural mantra of the breath. Sages observed that the breath, if listened to quietly, seems to whisper this sound on its own - a soft 'So' as we inhale and 'Hum' as we exhale. Because it repeats effortlessly with every breath, without our forcing it, it is known as ajapa japa - the unspoken repetition. This makes So Hum a beautifully simple meditation, available to anyone, anywhere, needing nothing but attention to one's own breathing.
How to Practise So Hum Meditation
- Sit comfortably with the spine gently upright, in a quiet place. Close your eyes and relax your body.
- Breathe naturally through the nose, without controlling the breath. Simply watch it flow in and out.
- Mentally hear 'So' as you inhale - feel the breath and the sound gently entering.
- Mentally hear 'Hum' as you exhale - feel the breath and the sound softly leaving.
- Let the mantra ride the breath without effort. Do not chant aloud; just listen inwardly, as if the breath itself is repeating it.
- When the mind wanders, gently return to 'So' on the in-breath and 'Hum' on the out-breath, without frustration.
- Start with 5-10 minutes and slowly extend as it feels natural.
Over time, the effort fades and the mantra and breath merge into a quiet, restful awareness. There is no wrong way if you remain gentle and relaxed.
Benefits of So Hum Meditation
Practitioners traditionally find that regular So Hum meditation brings:
- Deep calm and relaxation, as watching the breath naturally slows and steadies the mind.
- Reduced stress and anxiety, since attention rests in the present rather than in worries.
- Better focus and clarity through daily practice.
- A quiet remembrance of the Self, gently affirming 'I am That' beyond body and mind.
- Ease of practice, needing no props, special place or long training - just the breath.
It can be done in the morning to begin the day with peace, at night for restful sleep, or any time you feel restless. Being gentle and universal, So Hum suits complete beginners and experienced meditators alike. These are widely reported benefits of a calm, regular practice, offered as traditional wisdom rather than a medical claim.
Frequently Asked Questions
What does So Hum mean?+
So Hum means 'I am That' - sah (That, the Supreme reality) and aham (I am). It affirms the Vedantic truth that our innermost Self is one with Brahman. It is also called the natural mantra of the breath, with 'So' on the inhale and 'Hum' on the exhale.
Why is So Hum called ajapa japa?+
It is called ajapa japa, the 'unspoken repetition', because the mantra is said to repeat naturally with every breath without our forcing it - 'So' as we inhale and 'Hum' as we exhale. We simply listen to the breath rather than actively chanting.
Is So Hum meditation good for beginners?+
Yes, it is excellent for beginners because it needs no props, special place or long training - only gentle attention to the breath. Start with 5-10 minutes, mentally hearing 'So' on the inhale and 'Hum' on the exhale, and return gently whenever the mind wanders.
About the author
Acharya Vinaya Kapoor · M.A. Sanskrit, Mantra & Stotra Studies
Acharya Vinaya holds an M.A. in Sanskrit from Banaras Hindu University and writes the mantra and stotra commentary on Vandnaa. Her focus is on accurate pronunciation, traditional context, and helping modern readers connect with classical texts.
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