When I first picked up the Pulsetto, a vagus nerve stimulator, I was apprehensive about how this dog-collar-looking device could help me sleep.

I've tried a fair few sleep-enhancing gadgets from the state-of-the-art smart beds to the best sunrise alarm clocks and sleep trackers. But so far, nothing that has a direct influence on my nervous system.

Now, I must admit, I am usually a good sleeper. It is my job, after all, to find the best ways to optimize my sleep.

But if I do occasionally struggle to nod off it tends to be after a busy weekend where booze is involved — it's true, alcohol can really sabotage your sleep and trigger anxiety.

After a weekend away, I was keen to see if this device — which promises improved mood, lowered anxiety and better sleep — could help me beat hangxiety

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