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Vagus nerve stimulators are the latest wellness gadget doing the rounds on social media, promising to calm your nervous system and help you get better sleep.

As a sleep writer, I know not all trending sleep hacks and tech (uh-hum mouth tape) are worth your time or money. However, I've been intrigued by the rise in research on the vagus nerve and vagus nerve stimulation and its impact on sleep.

A couple of months back I tried Pulsetto, a dog-collar device that stimulates the vagus nerve. While I could see its potential, my final verdict was "save your dollars".

Yet here I am giving vagus nerve stimulation a second chance. This time I'm testing Nurosym, a stimulator that clips

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