sitting as bad for the body as smoking

Via JWZ:

Get Up. Get Out. Don't Sit.

Every single hour of television watched after the age of 25 reduces the viewer's life expectancy by 21.8 minutes.

By comparison, smoking a single cigarette reduces life expectancy by about 11 minutes, the authors said.

Looking more broadly, they concluded that an adult who spends an average of six hours a day watching TV over the course of a lifetime can expect to live 4.8 years fewer than a person who does not watch TV.

Those results hold true, the authors point out, even for people who exercise regularly. It appears, Dr. Veerman says, that "a person who does a lot of exercise but watches six hours of TV" every night "might have a similar mortality risk as someone who does not exercise and watches no TV." […]

Why a seemingly blameless activity like sitting should be detrimental to health, even for those of us who work out, is not fully understood, although it is assiduously being studied at many labs.

One partial explanation, however, is obvious. "The most striking feature of prolonged sitting is the absence of skeletal muscle contractions, particularly in the very large muscles of the lower limbs," says David W. Dunstan, a professor at the Baker IDI Heart and Diabetes Institute in Australia, senior author of the Australian study, and a pioneer in the study of sedentary behavior.

When muscles don't contract, they require less fuel, and the surplus, in the form of blood sugar, accumulates in the bloodstream, contributing to diabetes risk and other health concerns.

Also, fidget if you want a high metabolism.

file under: man of mystery

Via JWZ:

Coke Talk

I sometimes wonder if the dude who runs corrections at the New York Times is actually a CIA asset trying to communicate with sleeper agents.

NYT Corrections, December 30

An article on Monday about Jack Robison and Kirsten Lindsmith, two college students with Asperger syndrome who are navigating the perils of an intimate relationship, misidentified the character from the animated children's TV show "My Little Pony" that Ms. Lindsmith said she visualized to cheer herself up. It is Twilight Sparkle, the nerdy intellectual, not Fluttershy, the kind animal lover.

he says, “Today’s vocabulary word is “proprioception”.”

from jwz:

Mixed Feelings:

For six weird weeks in the fall of 2004, Udo Wächter had an unerring sense of direction. Every morning after he got out of the shower, Wächter, a sysadmin at the University of Osnabrück in Germany, put on a wide beige belt lined with 13 vibrating pads — the same weight-and-gear modules that make a cell phone judder. On the outside of the belt were a power supply and a sensor that detected Earth’s magnetic field. Whichever buzzer was pointing north would go off. Constantly.
“It was slightly strange at first,” Wächter says, “though on the bike, it was great.” He started to become more aware of the peregrinations he had to make while trying to reach a destination. “I finally understood just how much roads actually wind,” he says. Deep into the experiment, Wächter says, “I suddenly realized that my perception had shifted. I had some kind of internal map of the city in my head. I could always find my way home. Eventually, I felt I couldn’t get lost, even in a completely new place.”

On a visit to Hamburg, about 100 miles away, he noticed that he was conscious of the direction of his hometown. Wächter felt the vibration in his dreams, moving around his waist, just like when he was awake. […]

When the original feelSpace experiment ended, Wächter, the sysadmin who started dreaming in north, says he felt lost; like the people wearing the weird goggles in those Austrian experiments, his brain had remapped in expectation of the new input. “Sometimes I would even get a phantom buzzing.” He bought himself a GPS unit, which today he glances at obsessively. One woman was so dizzy and disoriented for her first two post-feelSpace days that her colleagues wanted to send her home from work. “My living space shrank quickly,” says König. “The world appeared smaller and more chaotic.”


During a long brainstorm session, they wondered whether the tongue could actually augment sight for the visually impaired. I tried the prototype; in a white-walled office strewn with spare electronics parts, Wicab neuroscientist Aimee Arnoldussen hung a plastic box the size of a brick around my neck and gave me the mouthpiece. “Some people hold it still, and some keep it moving like a lollipop,” she said. “It’s up to you.”

Arnoldussen handed me a pair of blacked-out glasses with a tiny camera attached to the bridge. The camera was cabled to a laptop that would relay images to the mouthpiece.

I cranked up the voltage of the electric shocks to my tongue. It didn’t feel bad, actually — like licking the leads on a really weak 9-volt battery. […] I walked around the Wicab offices. I managed to avoid most walls and desks, scanning my head from side to side slowly to give myself a wider field of view, like radar. Thinking back on it, I don’t remember the feeling of the electrodes on my tongue at all during my walkabout. What I remember are pictures: high-contrast images of cubicle walls and office doors, as though I’d seen them with my eyes. Tyler’s group hasn’t done the brain imaging studies to figure out why this is so — they don’t know whether my visual cortex was processing the information from my tongue or whether some other region was doing the work.

The author also has a blog about this stuff: sunnybains_feed.