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German researchers have found scientific evidence for what humans have known since the first caveman sprinted away from a saber-toothed tiger: running can make you feel pretty darn good. The so-called runners high can range from a general feeling of peacefulness to all-out euphoria and is associated with many types of high-octane exercise, Replica Ulysse Nardin watches reports the New York Times. But not all runners seem to reap the benefits - more research may show why some people are prone to post-run pink cloud bliss, while others merely want to throw up.The biochemical mechanism behind runners high was long an unproven hypothesis. We knew it probably had something to do with endorphins, but we werent sure what.

Now, scientists using PET scans to examine the brains of long distance runners before and after a two-hour run have found that endorphins produced during Replica Vacheron Constantin watches running can indeed attach themselves to the brain centers associated with emotion. The limbic and prefrontal areas, the parts of the brain activated by romantic love, appear to be especially affected. So get off match.com and go for a 5K! What about you? Do you run for the high? Or just to justify your double cheeseburger habit? --Emily Matchar

The Sunlighter, a solar-powered cigarette lighter, was born when 52-year-old Paul Martino sat on a windy New Jersey beach a few years back and watched some guys hopelessly trying to light a cigarette. Inventors see a problem and try to form a solution, he says. At the end of the day were just trying to make life easier.? The mechanics of the Replica A Lange&Sohne watches Sunlighter are pretty : Its curved aluminum suce, when positioned precisely right in the sun, creates up to 270-degree heat. The Sunlighter comes with interchangeable cigarette and cigar holders, but Martino, who recently celebrated his 13th year as a non-smoker, says it can light just about anything.