标签 科学美国人 下的文章
Sleep Deficit Diabetes
Few things are more satisfying than sleeping late on weekends. But though the extra z's may improve your mood, they do not appear to improve your health. Because a new study shows that so-called "recovery sleep" cannot reset the body's metabolic clock and may actually lead to some serious health issues.
It sounds like a witches' recipe: gather the hearts of a fence lizard; a little brown bat; a naked-tailed armadillo; and dozens of others. "So initially we tried to get them from zoos, but unfortunately that didn't work out very well. We couldn't get any samples, even when the animal died, we couldn't get a heart." Guo Huang, a developmental biologist at the University of California, San Francisco. He says they had more success obtaining specimens from the jars of natural history museums.