yoga meditation and inner life
What is the meaning and purpose of Om (Aum) in meditation?
What the sound means
The tradition holds that Om is not just a word but the primal sound, the sound from which everything arises. It is sometimes called pranava, which means something close to the sound that hums through all things. Written as Aum, it has three parts: A, U, and M. The Mandukya Upanishad, one of the oldest texts to explore this in depth, links each part to a state of being. A is the waking state, U is the dreaming state, and M is deep sleep. After the three sounds fades into silence, the tradition points to a fourth state, called turiya, which is pure awareness itself, beyond ordinary experience. That silence after the chant is seen as just as important as the sound.
Om as a name and a symbol
In the Yoga Sutras, Om is described as the name of Ishvara, the word used for the divine or the lord of all. Repeating it with understanding is said to turn the mind inward and remove obstacles to practice. This is why Om appears at the opening and closing of yoga and meditation sessions in many traditions. It marks a shift from everyday activity to inner attention. The written symbol for Om is also widely recognized as a visual sign of the whole tradition, though its meaning in meditation is always about the sound and the silence, not the shape.
How it is used in practice
Chanting Om at the start of practice is common across many Hindu and yoga traditions, though the exact way varies. Some chant it aloud three times. Some hold it silently in the mind throughout meditation. Some use it as a mantra, returning to it whenever attention drifts. In devotional settings it may open a prayer or a scripture reading. In more formal ritual, it often comes before any other mantra or sacred phrase. There is no single fixed method, and teachers and lineages differ in how they guide its use.
What research has looked at
Some researchers have studied the effects of chanting and repetitive sound on the nervous system. Findings suggest that slow, rhythmic chanting can calm the breath and reduce mental agitation. But the evidence is modest and the studies are limited. Science does not address what the tradition means by turiya or by Om as the ground of existence. Those remain within the tradition's own frame.
Today
Om is now heard far beyond Hindu communities. It appears in yoga studios, apps, and wellness spaces around the world, often without its full traditional meaning. Within the Hindu tradition and among those who practice seriously, it carries the weight of the Upanishadic and yogic understanding described above. For many in the diaspora, chanting Om is also a way of staying connected to something familiar and grounding, wherever they live.