Sports like American football and ice hockey get most of the attention when it comes to concussions (脑震荡) and other forms of brain injury. But soccer is a(n)     1     (激烈的) sport for which the head can be as important as the foot.

Heading the ball is a key soccer skill. But a new study finds that players who head the ball frequently are more likely to suffer     2     (长久的) brain injury and damage their memory than players who are less likely to use their heads.

“For many people, it’s beyond belief that a slight injury could be a problem,” said Dr. Michael Lipton, an expert of neuroradiology (神经放射学) in New York City.

Lipton and his team interviewed 37 adult soccer players from New York City and took high-tech scans (扫描) to     3     (检查) their brains. They also asked the players how often they played soccer and how often they headed the ball, and they gave the players some neurocognitive tests.

The     4     (结果) was that the researchers found no link between small amounts of heading and players’ attention, ability to control their       5     (速度) when they move, or ability to manage complex thinking tasks. However, Lipton warned players not to ignore the possible risks of heading the ball too many times. Players could safely head the ball 885 to 1,550 times a year. It took almost 1,800 times a year for players to have trouble with their memory.

9 . Reasons why you should learn how to surf

The feeling of riding the waves is one you can never describe until you have experienced it. While surfing, you’ll be in a peaceful state as you wait for the next big wave. It can be difficult to explain why, but the whole experience is indeed calm and exciting at the same time.    1    , as if you’re running away from all your worries in life.

Surfing is a physically challenging sport that requires you to use your entire body, making it almost an extreme fitness activity. Every surfing session will certainly make you exercise your whole body. So, expect to have aching muscles after your first surfing session.     2    

There is no denying the fact that healthy and fit people are confident with their bodies.    3    Nevertheless, surfing promotes confidence that isn’t necessarily rooted in how you look or boost your ego (自我). It takes time to learn and even master.

Learning a new skill with a group leads to a sense of accomplishment, and learning how to surf is no different. Although it’s natural to go surfing alone at times, no surfer has surfed without acquaintances (熟人), friends, or club mates. It’s a given for people who surf to share experiences with others, both locally and globally.

Like some other sports, surfing allows you to have time with nature.    5    With surfing, you’re able to observe nature from a different viewpoint. This is an ideal time to be one with nature, so grab the chance to broaden your horizons (视野) as a part of this beautiful planet we live on.