①It’s unclear whether napping is good for everyone, but research suggests, napping, a short-time sleep, can improve some people’s overall performance (表现) in the short term. And if people nap regularly (有规律地) at midday, it might also have longer-term benefits (益处) to health.
②For one thing, several studies find that a short-time sleep is good for brain to work well. A 2021 study in Science Advances finds that napping is able to improve reaction (反应) time and memory performance. A short nap can also help with creativity (创造力) .
③These benefits of napping are the strongest for people who don’t get enough nighttime sleep. A 2014 review of research says when night-time workers, new parents and older people with little nighttime sleep take a nap during night-time work, they feel less sleepy and have better overall performance.
④However, some people may feel tired after napping. That’s because they don’t time their naps right. Then how long is a well-timed short sleep? A 20-minute nap is useful, the psychologist Dautovich says, and 60 to 90 minutes of sleep can be even more helpful. However, when people sleep for more than 20 minutes and less than 60 minutes, they will feel tired easily.
⑤For another, regular short naps also seem to improve brain health in the long term, Garfield and her colleagues at University College London find. People with regular napping genes (基因) have a larger brain volume (大脑容量) . All brains lose volume as they age, Garfield says, but taking a nap regularly is able to help slow down your aging for 2. 6 to 6. 5 years.
⑥Of course, not everyone can nap, Garfield says. And there are other healthy habits that could fill 20 minutes a day, such as going on a walk or going to the gym. But if it can fit in your timetable and you are also willing to try, napping will definitely reward you in many ways.
25. From a 2021 study in Science Advances, napping can help to improve _________.
A.reaction time and creativity | B.sports skills and brain volume |
C.brain volume and napping genes | D.sports and memory performance |
26. According to Dautovich, which is a well-timed nap?
A.A 25-minute nap. | B.A 45-minute nap. |
C.A 70-minute nap. | D.A 120-minute nap. |
27. The writer probably agrees that _________.
A.people are tired but more creative after a long night’s sleep |
B.regular naps help save brain volume and slow down aging |
C.night-time workers feel sleepy after taking a well-timed nap |
D.taking a short-time nap regularly is a better habit than walking |
28. What’s the layout (结构) of the passage?