Sleep problems are a “global disease that threatens health and quality of life for up to 45% of the world’s population,”according to World Sleep Day statistics.
But is it easy to recover from sleep deprivation (缺乏) especially if you’re young？Does a good night’s sleep or two—and certainly a full week of sleep—make you be back to your fully functioning self?
Unfortunately,a recent new study showed that may not be the case, even for younger people. Thirteen people in their 20s who slept 30％ less than they needed for 10 nights didn’t fully recover most of their cognitive (认知的) processing after seven nights of unrestricted sleep to recover.
“What the study showed is that there are things like memory and mental processing speed that will not be restored that quickly,” said sleep specialist Dr. Raj Dasgupta,an assistant professor of clinical medicine at the University of Southern California.
“Definitely, the major parts of sleep loss can be recovered, but there are things that you’re just not going to get back quickly.” Dasgupta said. “That’s why it’s so important not to have that sleep debt in the first place.” That’s because the brain needs uninterrupted sleep cycles to absorb fresh skills. form key memories, and repair the body from the day’s wear and tear. During sleep, your body is actually repairing and restoring itself.
A lack of sleep therefore impacts your ability to pay attention. learn new things, be creative, solve problems and make decisions. Even skipping sleep for just one night disrupts(扰乱) functioning.
Depending on our age, we are supposed to get between 7 and 10 hours of sleep each night. But 1 in 3 Americans don’t get enough sleep, according to the CDC. In addition. 50 million to 70 million Americans struggle with sleep disorders, which can ruin a good night’s shut-eye.
The CDC calls that a “public health problem”, because disrupted sleep is associated with a higher risk of conditions including high blood pressure, weakened immune performance, weight gain, depression, and a higher risk of diabetes, stroke, and some cancers.
【小题1】What did the recent new study find?| A．A lack of sleep is common in America. | B．Good sleep can improve our memory. |
| C．Sleep deprivation leads to serious risks. | D．Recovering from a lack of sleep is hard. |
| A．What sleep cycles are. | B．The importance of enough sleep. |
| C．The risks of sleep deprivation. | D．Why we don’t get enough sleep. |
| A．To inform. | B．To argue. | C．To predict. | D．To entertain. |
| A．The Reasons for Sleep Loss Remain Unknown |
| B．The Effect of Poor Sleep Cycles Reappears Often |
| C．Sleep Disorder Problems Threaten People’s Health |
| D．Sleep Deprivation Recovery Takes Longer than You Think |
