I electrocuted my own vagus nerve every day for a week to find out if brain health wearables are worth the hype
Can I shock my stress away?
by https://www.techradar.com/uk/author/matt-evans · TechRadarFeatures By Matt Evans Published 1 August 2026
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You could be forgiven for thinking that most wearable-tech categories have come as far as they're ever going to. All smartwatches look the same now, and that form factor isn’t going away anytime soon. It's a similar story with smart rings, with “slightly thinner” being the main selling point of the Oura Ring 5. And the screenless Whoop tracker has given birth to a bunch of copycats, including the Fitbit Air, and most recently the Garmin Cirqa.
When you think of wearable tech, you normally think of some sort of fitness tracker. But there is an area of wearables that’s still in flux, as categories do before there’s a consensus on what works: neurotech. Neurotech devices are generally wearable technology to monitor, or temporarily alter, our brain chemistry for optimal performance or to treat neurological injuries, such as post-traumatic stress disorder or depression.
They’re also being used to improve our brains to rest harder and focus longer. Our writer Becca Caddy recently wrote about the dangerously addictive thrills of 'over-optimization', so it’s no surprise to see the out-there concept of rewiring the brain being embraced by the cult of biohacking.
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Nootropics — mind-enhancing drugs — are promoted heavily on podcasts, with brands like Gorilla Mind and Alpha Brain enjoying airtime on popular ‘bro-science’ platforms like The Joe Rogan Experience to help get ‘cognitively dialed’. Away from pharmacological solutions, multi-millionaire longevity biohacker Bryan Johnson uses Nurosym, an electrical vagus nerve stimulation device, to “make [his] body more parasympathetic, more chill”.
It’s Nurosym that I’ve been using this week. There are other wearables out there that promise to do all sorts of things — the Neurosity Crown for example (pictured above), promises to improve concentration through “neuroadaptive meditation”, measuring your brainwaves and playing music to that pattern to improve focus during work. All while looking like the sort of thing you might see Patrick Stewart wear in the X-Men films.
The Muse 2 headband is a meditation aid that uses electroencephalography (EEG) sensors to read your brain activity and provide personalized meditation guidance, in much the same way as a smartwatch might read your heart rate and offer workout suggestions.
The vagus nerve, however, is a key target for brain health. Proper stimulation of the vagus nerve is said to offer all sorts of benefits, treating conditions as varied as depression, anxiety, inflammation, bipolar disorder, obesity, POTS, and Alzheimer's. For people without those conditions, vagus nerve stimulation can improve sleep quality, regulate stress and improve relaxation overall, ensuring you're well-rested and ready to tackle life's challenges.
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