1 . Making day-to-day activities more intense for a few minutes — such as briefly stepping up the pace of a walk — could offer people who don’t exercise some of the health benefits that exercisers enjoy, according to a new study of roughly 25, 000 adults who reported no exercise in their free time.

Those who include three one- to two-minute bursts of intense activity per day saw a nearly a 40 percent drop in the risk of death from any cause compared with those without such activity. The risk of death from cancer also fell by nearly 40 percent, and the risk of death from cardiovascular (心血管的) disease dropped almost 50 percent, researchers report online December 8 in Nature Medicine.

“This study adds to other literature showing that even short amounts of activity are beneficial,” says Lisa Cadmus-Bertram, a physical activity epidemiologist (流行病学家) at the University of Wisconsin-Madison. “So many people are daunted by feeling that they don’t have the time, money, motivation, transportation, etc. togo to a gym regularly or work out for long periods of time,” she says. “The message we can take is that it is absolutely worth doing what you can.”

The researchers were looking for bursts of intense activity that met a definition determined in a laboratory study, like reaching at least 77 percent of maximum heart rate and at least 64 percent of maximum oxygen consumption. In real life, the signs that someone has reached the needed intensity level are “an increase in heart rate and feeling out of breath” in the first 15 to 30 seconds of an activity, Stamatakis says.

Regular daily activities offer several opportunities for these bursts, he says. “The simplest one is maximizing walking pace for a minute or two during any regular walk.” Other options, he says, include carrying grocery bags to the car or taking the stairs. “The largest population health gains will be realized by finding ways to get the least physically active people to move a little more.”

2 . As we age, even if we’re healthy, the heart just isn’t as efficient in processing oxygen as it used to be. In most people the first signs show up in their 50s or early 60s. And among people who don’t exercise, the changes can start even sooner.

“Think of a rubber band. In the beginning, it is flexible, but put it in a drawer for 20 years and it will become dry and easily broken,” says Dr. Ben Levine, a heart specialist at the University of Texas. That’s what happens to the heart. Fortunately for those in midlife, Levine is finding that even if you haven’t been an enthusiastic exerciser, getting in shape now may help improve your aging heart.

Levine and his research team selected volunteers aged between 45 and 64 who did not exercise much but were otherwise healthy. Participants were randomly divided into two groups. The first group participated in a program of nonaerobic (无氧) exercise—balance training and weight training—three times a week. The second group did high-intensity aerobic exercise under the guidance of a trainer for four or more days a week. After two years, the second group saw remarkable improvements in heart health.

“We took these 50-year-old hearts and turned the clock back to 30-or 35-year-old hearts,” says Levine. “And the reason they got so much stronger and fitter was that their hearts could now fill a lot better and pump (泵送) a lot more blood during exercise.” But the hearts of those who participated in less intense exercise didn’t change, he says.

“The sweet spot in life to start exercising, if you haven’t already, is in late middle age when the heart still has flexibility,” Levine says. “We put healthy 70-year-olds through a yearlong exercise training program, and nothing happened to them at all.”

Dr. Nieca Goldberg, a spokeswoman for the American Heart Association, says Levine’s findings are a great start. But the study was small and needs to be repeated with far larger groups of people to determine exactly which aspects of an exercise routine make the biggest difference.

4 . Nowadays, in many places of the world, kids play soccer less than before.     1     Besides, many parents don’t know soccer’s real help to kids. Here are some reasons why kids should play the beautiful game.

Soccer is a team sport.

Teamwork is a life skill that kids need to learn. Being part of a team isn’t just about learning how to work together and share talents. It’s also about teaching kids how to face failure. It doesn’t end there, either. Being part of a team lets kids know how to take responsibility for their behavior.    2    

Soccer shapes motor skills (运动技能).

Nowadays, many kids prefer to stay in their rooms to have fun through TV, video games and smartphones.    3    It can cause them to lose out on valuable motor skills. By playing youth soccer, kids get a chance to develop their physical strength and motor skills.

    4    

Soccer can improve students’ concentration (专注) in the classroom. Besides, soccer is a fast-paced game, so kids can learn how to solve problems quickly. Plus, soccer is a sport which involves getting the ball from point A to point B. So kids’ visual-spatial (视觉空间) ability can be improved when they play the game, which can help them learn subjects like Physics.

Soccer improves the personal character.

The World Health Organization recommends kid get at least 60 minutes of exercises daily. This isn’t only for the physical benefits but also for the benefits to the personal character.     5     And these kids often have more self-confidence.

5 . The Biggest Stadiums in the World

People have been pouring into stadiums since the days of ancient Greece. In around 80 A.D., the Romans built the Colosseum, which remains the world’s best known stadium and continues to inform contemporary design. Rome’s Colosseum was 157 feet tall and had 80 entrances, seating 50,000 people. However, that was small fry compared with the city’s Circus Maximus, which accommodated around 250,000 people.

These days, safety regulations-not to mention the modern sports fan’s desire for a good view and comfortable seat — tend to keep stadium capacities (容量) slightly lower. Even soccer fans tend to have a seat each; gone are the days of thousands standing to watch the match.

For the biggest stadiums in the world, we have used data supplied by the World Atlas list so far, which ranks them by their stated permanent capacity, as well as updated information from official stadium websites.

All these stadiums are still functional, still open and still hosting the biggest events in world sport.

·Rungrado 1st of May Stadium, Pyongyang D.P.R. Korea. Capacity: 150,000. Opened: May 1,1989.

·Michigan Stadium, Ann Arbor, Michigan, U. S. Capacity: 107,601. Opened: October 1, 1927.

·Beaver Stadium, State College, Pennsylvania, U. S. Capacity: 106,572. Opened: September 17, 1960.

·Ohio Stadium, Columbus, Ohio, U. S. Capacity: 104,944. Opened: October 7,1922.

·Kyle Field, College Station, Texas, U. S. Capacity: 102,512. Opened: September 24, 1927.