HINTS:

十以上数字、年份、百分率、金额等都用阿拉伯数字表示，数字采用千位逗号隔断


In general the fatter subjects slept about 1.8 hours a week less than those with normal weights. "Americans experience insufficient sleep and corpulent bodies. Clinicians are aware of the burden of obesity on patients," the study said. "Our findings suggest that major extensions of sleep time may not be necessary, as an extra 20 minutes of sleep per night seems to be associated with a lower body mass index," it added. "We caution that this study does not establish a cause-and-effect relationship between restricted sleep and obesity, but investigations demonstrating success in weight loss via extensions of sleep would help greatly to establish such a relationship."
总的来说，体态肥胖的受试者每周比正常体重的受试者少睡约1.8小时。 该研究指出：“美国人普遍睡眠不足﹑体型超标。医生们已经认识到肥胖给病人带来的负担。” 同时该研究还显示：“我们的调查结果表明没有必要大量增加睡眠时间，每晚多睡20分钟似乎有助于降低体重指数。” “我们要提醒大家的是这项研究的结果并不足以证明节制睡眠和肥胖之间的因果关系，（然而）调查显示延长睡眠时间确实可以成功减轻体重，这对于证明这一因果关系非常有帮助。”