1 . Kite surfing is a sport that takes place on the surface of the water, on top of boards that are similar in design to wakeboards (尾波滑水板), with the surfer pulled by a kite. The popularity of kite surfing has grown, although it is rather difficult to master. Kite surfing uses the same equipment as kite boarding, but is generally given more to riding on top of waves, rather than on smaller lakes or other calm bodies of water.

Early experiments in kite transportation took place through the 19th century, and at the dawn of the 20th century Samuel Cody crossed the English Channel using kites and a small boat. Kite surfing itself, however, wasn’t really born until the late 1970s. Beginning in that decade, more people became involved in using kites for personal transport and sport. Kite technology itself advanced enormously during the 1970s, with kites becoming much more controllable.

The early kite surfing was rather accidental, but innovators continued to develop the technology to make it easier to control and safer. By the late 1990s, kite surfing was becoming popular off the coast of Maui, France and throughout the world. In 1997, a special kite system was built specifically for kite surfing, which helped kite surfing into the mainstream.

Because of the high speeds and the dangers, it is generally recommended that would-be kite surfers take at least a few basic classes to learn the fundamentals. The main attraction of kite surfing is the potential for amazing tricks. The kite allows the surfer to experience enormous jumps, flying through the air for large distances before hitting the water in a controlled fashion. Like skateboarding, kite surfing makes use of a number of board grabs, with complex tricks possible due to the long period of time the surfer can remain in the air.

2 . Trying to stand out from millions of videos on the social networking platform Douyin can often be difficult, but a relatively new account(帐号), which has only been active since last year, has managed to do so easily.

The star behind this account is not a young woman with a slim figure, but a 70-year-old woman. Within just a few months Chen Jifang has attracted over 400, 000 followers with her energetic workouts (锻炼). She was once even featured on a reality show on CCTV.

"The main group that I wanted to encourage was people aging 30 to 50," says Chen. "I think they will be encouraged to work out after seeing that a granny like me can. It is never too late to pursue(追求)good health."

Chen's passion for exercising was born out of a need instead of desire to become famous. Her health had been poor since she was a child. In 2018, she was diagnosed with a lot of problems such as a fatty liver and hyperlipidemia(高血脂). The doctor suggested that she exercise more to stop the further decline of her already poor health.

Overweight Chen started with light jogging, but a fitness coach persuaded her to enter a gym on Dec 29, 2018. "Everyone in the gym was young. They were giving me curious looks," recalls Chen, who walks 3.5 kilometers to the gym every day.

Her daily training started at 8 am with 50 pushups(俯卧撑)and running. After a short break at 9 am, Chen continued working out until 3 pm. She hit the gym every day in 2019. She also gave up her favorite foods like barbecued meats and spicy hotpot.

When her health improved, Chen did more challenging workouts like weightlifting. Three months later, she lost 28 kilograms. Her health index also returned to normal.

"We cannot stop aging, but exercise can slow it down," she says. "Instead of spending money on medicine, it is better to spend money on fitness."

3 . What is cross country running? Cross country is an outdoor endurance (耐久性) sport that can be mentally challenging and fun.     1     You’re not only putting one foot in front of the other; you’re also thinking ahead to barriers and changes in the trail or course.

    2     However, before you begin training and racing, you should be aware of potential injuries and how to avoid them. How can you prevent cross country running injuries? The best ways for outdoor runners to stay healthy include the following running tips:

Stretch daily. For all runners and athletes, a regular stretching routine is an important part of conditioning.     3    

Warm up and cool down. Muscles and tendons (跟腱) are less likely to overstretch or tear if they’ve been properly prepared for running and racing. High-intensity workouts require more prep and post-workout cool down than low-impact activities.

Wear the right shoes. Make sure your shoes fit properly and that they are neither too tight-fitting nor too loose.     4    

Eat and drink enough. Competitive distance runners like to keep their weight low. However, consuming too few calories can harm your body, especially if you’re a girl or woman subject to eating disorders.     5     It’s effective to prevent injury and heat illness. Remember that especially in full sun or in humid regions of the state, you particularly tend to have heat stroke. Drink plenty of water before and after running.

6 . 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.

7 . “Taijiquan is a traditional physical practice in China characterized by relaxed, circular movements that work with breath regulation.” thus reads the introduction of Taijiquan by the United Nations Educational, Scientific and Cultural Organization(UNESCO) on its website. Also referred to as T'ai Chi or Chinese boxing, Taijiquan has been a well-known physical practice worldwide. For a long time, different stories regarding the birthplace of Taijiquan have made the rounds, focusing mainly on two places-Wudang Mountain in Hubei Province, central China, and Wenxian County.

A tale tells how a man named Zhang Shanfeng created Taijiquan about 1,000 years ago after witnessing a fight between a sparrow and a snake, drawing inspiration from the animals' movements. The Wudang Mountain is known as one of China's major Taoist land-marks. This oldest philosophy of China has had a great impact on Taijiquan.

The story about its Chenjiagou origin has some more hard proof. In the mid-17th century, a retired general and village head named Chen Wangting combined his kungfu training with elements of Chinese philosophy to create Chen style Tai Chi. Popular belief holds that many modern styles of Taijiquan have been derived from the Chen style. Wenxian is listed as Taijiquan's birthplace on the UNESCO website.

Different from Shaolin Kungfu's powerful approach, Taijiquan looks softer and slower. This soft yet powerful spirit runs through the style of Chenjiagou, which has about 300 years of Taijiquan history.

The Chen style Taijiquan was passed down the generations. Chen Ziqiang is a direct offspring of Chen Wangting. His uncle Chen Xiaowang is now a world-renowned T'ai Chi master and his father Chen Xiaoxing, a leading actor in the video that China submitted to the UNESCO when applying for the honor, also has gained international fame.

8 . Any time of the day you can commit to exercising is a good time for getting active, the best time for exercise is different for each person. Consider your lifestyle and exercise goals to help find the right time for you.

    1    

Do you struggle to get out of the bed in the morning or do you wake up energized and ready to go? Are you a night owl and never get to bed before midnight? Once you establish what your sleep tendencies are, you will have a better idea of when your body is most inclined（倾斜的）to exercise. If you are not a morning person, do not schedule an early morning workout.     2     .Sacrificing sleep to get a workout in can result in poorer performance and make it difficult to develop a consistent routine.

Consider your daily schedule.

When are you the busiest? When do you tend to schedule your most important tasks?     3     Some people would prefer to get it out of the way first thing, while others prefer to put it off until the end of the day when they are all caught up. If you tend to have a lot of activities after work, you may want to exercise in the morning.     4     An afternoon workout may be good if you have time on your lunch break and do not want to sacrifice your evening or morning time.

Determine your exercise goals.

Are you trying to lose weight? Are you trying to improve your performance? Or are you trying to develop a consistent exercise routine? If you are trying to develop a routine, you may want to exercise in the morning.     5     You may not feel like exercising after a long day of work, errands, or being out on the town. If you are trying to improve your performance, afternoon or evening exercise may the best. You may experience less fatigue, quicker reaction times, and more strength and flexibility in the evening. If you are trying to lose weighty you may want to exercise in the morning before you have eaten. When you exercise in a fasted state, your body is more likely to use fat instead of carbohydrates for energy.

9 . Scientific research on yoga has found that yoga practice can help with problems such as back pain, depression and anxiety. Still, yoga studies tend to be of uneven quality, often relying on self-reported survey data. However, a 2019 review paper focused on a more objective measure: brain scans. Though far from definitive, the findings show that the practice may improve brain health, and they indicate a way to bring yoga and science more convincingly together.

The review, led by Neha Gothe, director of the Exercise Psychology Lab, examined 11 papers that used various types of brain scans to assess the impact of yoga practice on the brain. Gothe and her colleagues limited their review to studies in which all three major elements of yoga were included: the physical poses, breathing exercises, and meditation or mindfulness. Three patterns emerged with some consistency: yoga practice could be linked to increased gray matter volume(体积) in the hippocampus, a key structure for memory; increased volume in certain regions of the prefrontal cortex, the seat of higher-order-cognition(认知); and greater connectivity across the default mode network. This network plays a role in processing memories and emotions.

Jessica Damoiseaux, a co-author of the review paper, focuses her research on aging-related changes in the brain, and she notes that the structures that seem to be strengthened by yoga are ones that tend to shrink with aging. The greater volumes linked to yoga are similar to those seen in studies of aerobic (有氧的)exercise. This raises a question: Is there really anything special about yoga or is it just another brain-preserving workout?

At this point it’s hard to say. Clearer answers will come with better studies that build on the smaller experiments. Gothe, for example, recently received government funds for a study that will assign 168 old adults to six months of classes of yoga, aerobic exercise, or stretching and strengthening. “It’s exactly the kind of trial we need,” says Gothe.