Chanting the sound "Om" at 136.1 Hz ( Hertz ) is a practice in sound healing and meditation, believed to resonate with the Earth's frequency, representing the primordial sound of the universe for deep relaxation, stress relief, and spiritual connection, often using tuning forks or ambient music . This frequency is linked to the vibration of the planet and is thought to enhance meditative states by aligning practitioners with a universal, cosmic resonance, with specific uses