Om is the most sacred sound in the Indian tradition. The Upanishads describe it as the essence of everything, the sound from which all other sounds arise. The Mandukya Upanishad explains it through its three parts, A, U and M, followed by silence. These stand for waking, dreaming and deep sleep, and the silence after the sound points to pure awareness, the state beyond all three. In daily practice, Om is chanted at the start of prayers, mantras and meditation, because it prepares the mind to turn inward.
This ancient practice also has a simple and observable side. When we chant Om slowly, the exhale becomes long and even, and the sound of “M” creates a gentle vibration in the face, throat and chest. Slow breathing is known to activate the body’s relaxation response and lower heart rate. A small number of studies using brain imaging have reported that Om chanting reduces activity in brain regions linked to stress and emotion, and other research connects it with better focus and a calmer mood. These studies are still small, so they should be taken as encouraging, not as final proof.
It is also wise to avoid popular myths. Claims that Om is the exact frequency of the Sun or of the universe, or that it “heals” illness, are not supported by evidence. Chanting Om is not a medical treatment, and it does not need such claims to be valuable. Its worth lies in what you can feel for yourself: a steadier breath, a quieter mind and a few moments of real stillness in a busy day.
To begin, sit comfortably with your spine upright and eyes closed. Take a deep breath in, then chant “Aaa-Ooo-Mmm” slowly on the exhale, letting the “M” hum fade into silence. Pause and notice that silence. Repeat for five to ten minutes each morning. Do it without strain and without expecting dramatic results. Over time, this simple habit joins devotion and discipline, and it teaches the mind to rest.