Chanting vibrates the body, thus stimulating the vegus nerve. The vegus nerve connects almost all of the major organs of the body. Stimulating it helps release important neuro-chemicals, proteins and hormones into your body. This helps you be calm, reduces inflammation and anxiety. It helps with brain health. There is hope that working with the vegus nerve will help with epilepsy and even alzheimer's. Any chantwill work. "Om" is one of the easiest. If you feel uncomfortable chanting, hum instead. Or simply sit and breathe deeply.
How to chant Om – Exhale completely drawing your navel to your spine. Then inhale as much as possible. Open your mouth and start from the back of your throat, slowly exhaling while making the sound “om.” Om can be spelled om, omm, ohm, or aum. It can be can be pronounced two ways, “om” or “aum." Both are correct. Once you chant “om” sit for a while and just notice how you are feeling.