As if you needed another reason to hate your alarm clock. A new study suggests that, by disrupting (扰乱) your body’s【C1】________rhythms, your buzzing, blaring friend could be making you overweight.

The study concerns a phenomenon called “social jetlag (社交时差)”. That’s the【C2】______to which our natural sleep patterns are not consistent with our school or work schedules. Take the weekends: many of us wake up hours later than we do during the week, only to【C3】__our early schedules coming Monday morning. It’s enough to make your body feel like it’s【C4】_____the weekend in one time zone and the week in another.

But is social jetlag【C5】_____bad for your health? To investigate, Till Roenneberg and his colleagues collected data from tens of thousands of【C6】__to an Internet survey on sleep patterns and other behaviors. Some clues have been yielded from【C7】_____work with such data. “We have shown that if you live against your body clock, you’re more likely to smoke, to drink alcohol, and drink far more coffee,” says Roenneberg.

In the new study, the team measured the social jetlag of people aged 16 to 65 by【C8】_____the differences between sleep times on workdays and non-workdays. They then constructed a mathematical model that gauged (衡量) how well【C9】__factors, such as age, gender, sleep duration, and social jetlag could predict body weight. They found that the first three factors were important【C10】_____of body weight for all people. In addition, for people who are already on the heavy side, greater social jetlag corresponded to greater body weight.

A) actually F) extent K) previous

B) advocating G) finally L) responses

C) biological H) issues M) resume

D) calculating I) normal N) spending

E) distant J) predictors O) survey

【C4】