You'll have someone's eye out with that

The famously pain-resistant Vikings might have approved of the latest fad sweeping Sweden. Nail beds are becoming popular with health-conscious consumers convinced that lying on rubber pads embedded with sharp, plastic pins is good for them.

Hindu fakirs favour a wooden bed bristling with metal nails, but the spiky foam version does the job nicely, says Catarina Rolfsdotter-Jansson, a 46-year-old yoga instructor and writer who uses one every day and describes it as being “quite painful actually”.

“The back looks picked at, as if with a fork”, when a person gets up off the mat. But then “you relax and feel nice again”, she told The New York Times.

Users often claim relief from insomnia, migraines and asthma, while a more zealous group believes that the mat can cure everything from schizophrenia to dandruff.

At times these Nordic nail bed devotees seem like a cult: 3,000 of them gathered recently in a Stockholm park, placing their mats in the form of the rays of the sun. They sang mantras and fell asleep.

Not everyone is convinced of the benefits, however. The Svenska Dagbladet newspaper concluded recently that there was “nothing that even approaches a scientific proof for the effects” of the nail bed.

In response, the largest manufacturer is organising medically supervised trials to monitor 30 regular users.

- The Times, 29 November 2009