Taking a Nap during the DayMedical experts say most Americans do not get enough sleep. The

Taking a Nap during the Day

Medical experts say most Americans do not get enough sleep. They say more Americans need to 【51】______ for a short period in the middle of the day. They are advising people to sleep lightly 【52】______ continuing with other activities. One study earlier this year found that persons who sleep for a few minutes during the day were less likely to die of 【53】______ disease. The study followed more than 2,300 Greek adults 【54】______ about six years. Adults who rested for half an hour at least three times a week had a 37 percent lower 【55】______ of dying from heart disease than those who did not nap.

Study organizers said the strongest 【56】______ was in working men. They said naps might improve health by mitigating(减低) tension 【57】______ by work.

Some European and Latin American businesses have supported the idea of 【58】______ for many years. They urge(催促) people to 【59】______ work, go home and have a nap before returning. In the United States, some companies let workers rest briefly in their offices. They believe this reduces mistakes and accidents, and also 【60】______ the amount of work a person can do.

Sleep experts say it is likely that people 【61】______ more mistakes at work than at other times. They say people should not carry out important duties 【62】______ they feel sleepy. And they say the best thing to do is to take a nap. About twenty minutes of rest is all you 【63】______. Experts say this provides extra energy and can increase your 【64】______ until the end of the day. But experts 【65】______ that a nap should last no more than twenty to thirty minutes. A longer nap will put the body into deep sleep and waking up will be difficult.

A．work

B．wait

C．live

D．rest