What is vagus nerve stimulation, and do I need to do it?

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“Vagus” is a Latin word meaning “wandering”, and the nerves with that name (one on the right, one on the left) meander around the body, connecting the brain to the heart, the lungs, the gut and beyond. They’re known to play a significant role in putting us in a state of rest and digest (as opposed to fight or flight), and studies have shown that…