题目内容：

    As is often the case, when we wake up feeling sleepy and with dark circles under eyes, many of us often make a decision: “I’m going to bed earlier tomorrow!” we are so determined. 1. We are still absorbed in what we are doing without realizing it is already too late the next day. This behavior is called “bedtime procrastination” (睡眠拖延症), and results from lack of self-control and our body clock.

2. According to a study carried out by a group of health psychologists, 53 percent of the 2,400 participants said they didn’t follow their sleep schedule, delaying it at least twice a week. They delayed bedtime because they couldn’t stop doing other trivial things (琐事), which were keeping them up in the first place.

People who generally have trouble resisting temptations (诱惑) and following their intentions firmly are also more likely to delay going to bed. They find it hard to control themselves. 3. Our body clock also plays an important role when it comes to bedtime. Those who get up late are more likely to postpone their bedtime than those who wake early every morning. Night owls would go to bed late at the very beginning of the weekday, even though they had to get up early for work and school. 4.

Therefore, if we want to cure our bedtime procrastination, the intention to go to bed earlier is not enough. 5. We should have a clear understanding that bedtime procrastination is a big problem. The choices we make could turn out to be pretty important for our health.

A. Bedtime procrastination is a common problem.

B. It will have extreme effect on our health sooner or later.

C. Yet, lack of self-control is not the only thing to blame.

D. Unfortunately, chances are that we don’t stick to our promise.

E. It’s their special body clock that plays a part in delaying their bedtime.

F. Biological processes need to support this intention.

G. So we just need to take action to change our sleep model.