2023届高三英语外刊语篇精读Day10 讲义

Day10 Scientists Warn Of 'Global Sleep Crisis' A new study using data collected via a smartphone app worldwide reveals that modern-day social pressures are forcing people to cut back on sleep, contributing to a “global sleep crisis,” scientists say. Scientists from the University of Michigan tracked the sleep patterns of people from all around the world using the free, no-ad app, Entrain. The app was originally designed and released in 2014 to help fight jetlag by mathematically generating lighting schedule recommendations, enabling users to adjust to new time zones as quickly as possible. But the research team asked users of the app aged 15 and older to share anonymous sleep, waking time, and lighting data. In addition to their sleeping habits, users could share their age, gender, time zone, and country of origin. The study, published in the journal, Science Advances, analyzed the data from more than 6,000 people collected from 100 different countries. What they've found, unfortunately, is not good. Cultural and social pressures to stay up at night for work or fun is keeping more and more people up each night. People who tend to not get a good night's rest do so because of the time they go to bed, as societal pressures override our natural circadian rhythms. Those who under-slept also experienced reduced cognitive abilities throughout the day. Lack of sleep is widespread enough in the human population that it constitutes a “global crisis” right now, according to scientists. The average amount of sleep varies from country to country. People in Japan and Singapore had an average of seven hours and 24 minutes of sleep, while the people in the Netherlands got eight hours and 12 minutes on average, giving the Dutch nearly an hour more in bed every night. While this may not sound significant, even a difference of 30 minutes can have an impact on a person's health and how they function for the rest of the day. Canadians tended to wake up after 7 a.m., a sleep pattern mo