Whether you think you need daytime rest or not, picking up a nap (午睡) habit is a mart, healthy move. The Mayo Clinic says naps __67__ relaxation, better mood and alertness, and a sharper working __68__. A 2008 British study found that compared to getting more nighttime sleep, a mid-day nap was the best way to cope __69__ the mid-afternoon sleepiness. According to the Harvard Health Letter, several studies have shown that people __70__ new information better when they take a nap shortly after learning it. And, most __71__, a 2007 study of nearly 24000 Greek adults in the Archives of Internal Medicine found that people who napped __72__ had a 37 percent reduced risk of dying __73__ heart disease compared to people who didn’t nap. Of course, napping isn’t __74__ for everyone. If you’re suffering from inability to sleep, naps that are too long or taken too late in the day can __75__ with your ability to fall or stay asleep at night. But for most, naps can make you feel sharper and happier. Naps provide different benefits, __76__ on how long they are. A 20-minute nap will boost alertness and concentration; a 90-minute snooze (小睡) can __77__ creativity. According to prevention.com, you __78__ a natural dip in body temperature __79__ 1 p. m. and 3 p.m. A short nap at this time can boost alterness __80__ several hours and, for most people, shouldn’t __81__ being able to fall asleep at night. Pick a dark, nice place that’s not too warm or too chilly. Prevention.com __82__ napping on the couch instead of in bed, so you’re less __83__ to snooze for too long. Surprisingly, the best place to take a nap may be a hammock (吊床) if you have on. A Swiss study __84__ last year found that people fell asleep faster and had deeper sleep when they napped in a hammock than in a bed. That same rocking __85__ that puts babies to sleep works __86__ for grown-ups, too.

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