Researchers found that sleep deprivation（剥夺）has something with overeating. They studied 17 healthy men and women for 11 days and nights in a lab, where researchers recorded their every movement and recorded everything they ate. That way, researchers could make calculations of how much energy the participants were taking in and how much they were burning off through activities.
After a three-day baseline period, one group was freely assigned to sleep and wake whenever they wanted for eight days, while another was woken up after only two-thirds of their usual sleep time—that amounted to about 80 minutes less sleep per night on average. The group that experienced such restricted sleep tended to eat more the following day, adding 549 extra calories to their usual diet, while those who slept as much as they wanted ate about the same on each of the eight experiment days as they did during the three-day baseline period.
The poorly sleeping group was likely to gain weight over the long term, if their sleep was continually restricted, since they didn't burn any more calories than their better sleeping counterparts. That may help explain why previous studies have found that shift workers who work at night and sleep during the day tend to gain more weight than day workers: their disturbed sleep pattern may enhance them to eat more while they don't expend any more energy to work off the added calories.
Therefore, it's important for people to remember that the relationship between sleep, eating and weight is a complex one. Getting a sufficient amount of sleep each night may play an important role in regulating how much we eat and how many calories we burn, and it may also help determine when we eat. Eating when we should be sleeping may increase the risk of weight gain, as the body is more likely to turn nighttime calories into fat rather than burning them off.
【小题1】According to the researchers, there is a link between________.| A．sleep and health | B．sleep and activities |
| C．sleep and energy | D．sleep and overeating |
| A．eat less the following day | B．eat more the following day |
| C．wake earlier the following day | D．wake later the following day |
| A．burn more calories | B．work at night |
| C．gain more weight | D．eat more than others |
| A．the body can turn calories into fat at night |
| B．it is dangerous for people to gain weight |
| C．people should eat less to ensure a good sleep |
| D．people should pay attention to the relations between sleep, eating and weight |
