Word: sleepings
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...Sleep is one of the richest topics in science today: why we need it, why it can be hard to get, and how that affects everything from our athletic performance to our income. Daniel Kripke, co-director of research at the Scripps Clinic Sleep Center in La Jolla, Calif., has looked at the most important question of all. In 2002, he compared death rates among more than 1 million American adults who, as part of a study on cancer prevention, reported their average nightly amount of sleep. To many, his results were surprising, but they've since been corroborated...
...much sleep is ideal...
...Studies show that people who sleep between 6.5 hr. and 7.5 hr. a night, as they report, live the longest. And people who sleep 8 hr. or more, or less than 6.5 hr., they don't live quite as long. There is just as much risk associated with sleeping too long as with sleeping too short. The big surprise is that long sleep seems to start at 8 hr. Sleeping 8.5 hr. might really be a little worse than sleeping...
Morbidity [or sickness] is also "U-shaped" in the sense that both very short sleep and very long sleep are associated with many illnesses-with depression, with obesity-and therefore with heart disease-and so forth. But the [ideal amount of sleep] for different health measures isn't all in the same place. Most of the low points are at 7 or 8 hr., but there are some at 6 hr. and even at 9 hr. I think diabetes is lowest in 7-hr. sleepers [for example]. But these measures aren't as clear as the mortality data...
...visit this spring, are a bit different. What I have noticed is considerable seriousness of purpose, both in and out of class, and remarkably little self-absorption. Nobody tried to take over University Hall this spring, but quite a few of my students did give up long weekends without sleep or pay to campaign for their favorite candidates in New Hampshire, Ohio, and Pennsylvania. Instead of seeking change through self-indulgent and often self-defeating street tactics, these students sought a path to change in Iraq—and in other areas—through disciplined election work. And they...