Feeling constantly on edge? Like even small things — a delayed train or a last-minute deadline — push you into overwhelm? You’re not alone. Chronic stress is increasingly common, and many people are now exploring ways to calm their nervous system, including something called the vagus nerve. But what exactly is it — and can you really “reset” it? What is the vagus nerve? The vagus nerve is one of the longest and most important nerves in your body. It runs from your brainstem a