1 . In a new look at the impact of long-time sitting behavior on health, a new study links time watching television to an increased risk of death. One of the most surprising findings is that it isn’t just couch potatoes who were affected. Even for people who exercised regularly, the risk of death went up the longer they were in front of the TV. The problem was the long periods of time spent sitting still.
Australian researchers who tracked 8,800 people for an average of six years found that those who said they watched TV for more than four hours a day were 46% more likely to die of any cause and 80% more likely to die of cardiovascular (心血管的) disease than people who reported spending less than two hours a day in front of TV.
Time spent in front of TVs and computers and videogames has come under fire in studies in recent years for contributing to a spread of obesity in the US and around the world. But typically the resulting public-health message urges children and adults to put down the Xbox controller and remote and get on a treadmill (跑步机) or a soccer field.
The Australian study offers a different view. “It’s not the sweaty type of exercise we’re losing,” says David Dunstan, a researcher at Baker IDI Heart and Diabetes Institute, Melbourne, who led the study. “It’s the incidental moving around, standing up and using muscles. That doesn’t happen when we are plunked on a couch in front of a television.”
Indeed, participants in the study reported getting between 30 and 45 minutes of exercise a day, on average.The results are supported by a new field of research that shows how long periods of inactivity can affect the body’s processing of fats and other substances that contribute to heart risk. And they suggest that people can help decrease such risk simply by avoiding extended periods of sitting.”
Keeping such processes working more effectively doesn’t require constant intense exercise, but consciously adding more routine movement to your life might help, doctors say. “Just standing is better than sitting,” says Gerard Fletcher, a cardiologist at Mayo Clinic, Jacksonville, Fla., who works standing up at his computer. “When you stand up, you shuffle around a little bit and use muscles not required when you are sitting or lying down.”
Simple strategies for increasing activity include combining household chores such as folding laundry with TV-watching time or getting up to change a TV channel rather than using a remote control. The report, published Tuesday in the American Heart Association journal Circulation, focuses on TV watching in part because it is the main leisure-time activity in many countries, researchers said, especially in the US.
1. One misunderstanding people might have is that ________.| A．the radiation from TV may badly affect your sight |
| B．TV programs can broaden your horizons effectively |
| C．watching TV very long is a good way to kill time |
| D．regular exercise can minimize the side effect of watching TV |
| A．Remote control shouldn’t be used when people watch TV. |
| B．People who watch TV too long should take more physical exercise. |
| C．Sitting too long in front of TV will lead to high risk of heart attack. |
| D．Long-time sitting is bad for all people including those who exercise regularly. |
| A．By increasing simple movement. |
| B．By totally avoiding watching TV. |
| C．By taking some medicine. |
| D．By increasing sweaty type of exercise. |
People rarely feel their cleanest after a workout, but your own sweat might be the least of your issues. Your gym equipment could also be full of bacteria. Fitness equipment review site FitRated.com got bacteria samples from 27 pieces of equipment from three large gym chains. The results will make you want to take a long shower.
Free weights have an average of more than 1.1 million colony-forming units（菌落形成单位） per square inch, according to FitRated.com. In comparison, the National Sanitation Foundation says you’d find 172 CFU per square inch on a home toilet seat. But treadmills（跑步机） and stationary bikes were even worse offenders, with about 7,752 times more bacteria than a home toilet seat. That’s even more than these objects with more bacteria than a toilet.
Touching a surface with bacteria won’t necessarily make you sick. Some bacteria aren’t harmful, and others won’t do any harm in small amounts. But the fact that 70 percent of bacteria from the tested equipment FitRated.com tested were potentially harmful isn’t very comforting. If you tend to skip wiping down your workout machine, take that extra 30 seconds before and after you use the equipment. Even if you’re not a germaphobe（有洁癖的人）, you’ll be doing the rest of us a favor.
And since you can’t control what everyone else does, avoid getting sick by waiting to wipe your sweaty brow until you’ve washed your hands. “Your best defense is to be aware of washing your hands post workout and before eating or touching your face,” Kelly Reynolds, microbiologist and associate professor at the Zuckerman College of Public Health in Arizona, tells HuffPost. Oh, and don’t you dare rewear your sweaty clothes without doing laundry?
1. What does the underlined sentence imply?| A．People need to take a bath after a workout. |
| B．The gym equipment people use could not be so clean as imagined. |
| C．The sweat might be the leading cause of taking a shower. |
| D．It isn’t a good idea to use fitness equipment to exercise. |
| A．Making comparision |
| B．Listing examples |
| C．Giving definitions |
| D．Referring to the research findings |
| A．To discuss the unknown causes of illness |
| B．To provide the ways of keeping fit |
| C．To inform the necessity of cleaning the fitness equipment |
| D．To show the importance of doing exercise |
