If the testimonials are to believed, incorporating this stimulating habit into my daily routine could help to reduce stress and anxiety, curb inflammation and digestive issues, and perhaps improve my sleep and concentration by tapping into the “electrical superhighway” that is the vagus nerve.

From plunging your face into icy water, to piercing the small flap of cartilage in front of your ear, the internet is awash with tips for hacking this system that carries signals between the brain and chest and abdominal organs.

Manufacturers and retailers are also increasingly cashing in on this trend, with Amazon alone offering hundreds of vagus nerve products, ranging from books and vibrating pendants to electrical stimulators similar to the one I’ve been testing.

“They noticed that even if the device didn’t help their epilepsy, some of these patients started to have a better outlook on life,” says Kevin Tracey, a professor of molecular medicine and neurosurgery at the Feinstein Institutes for Medical Research in Manhasset, New York.

Tracey’s discovery also caught the attention of mind-body practitioners, including the Dutch motivational speaker and “Iceman” Wim Hof, who claimed that he could control inflammation in his body through a combination of breath work, meditation and cold water immersion.

Although this is primarily a medical device designed for patients with chronic health conditions that affect involuntary processes such as heart rate or digestion, Dundovic believes that healthy individuals like me may also benefit from auricular stimulation – albeit to a lesser extent.

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