I tested a 600 ear-zapping device - and it boosted my memory by 80%
Briefly

MailOnline's test of the £599 Nurosym vagus nerve stimulation device revealed impressive results, showing up to an 80% improvement in short-term memory. The device claims various health benefits, including anxiety and sleep issue treatments, by stimulating the vagus nerve via the tragus in the ear.
Vagus nerve stimulation is said to treat multiple ailments by sending electrical impulses through the skin. The underlying principle is to send targeted signals to the brain that correct dysfunctional signals contributing to various disease states.
Read at Mail Online
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