A new report from a university says 80% of the world's teens don't get enough exercise every day. The report comes from a research done with about 2 million students aged from 11 to 17 around the world. The report says activity standards(活动标准) are different in different countries and they are also different between boys and girls. In China for example only 20%. of the boys are active(活跃) enough, compared to 11% of the girls.
Why don't teens go out for exercise? One main reason is that they always have technology products in their hands or around them. They spend too much time on smart phones, computers and TVs in their free time. Many teens find it very hard to null themselves away from these devices. The report says that young people need to do less in the digital(电子的)world but more in the real world. It advises kids to get at least an hour of exercise such as running biking, playing sports, or many other outdoor activities every day.
More and more research shows that doing sports not only helps the body, but also helps the brain(大脑). It also helps kids to make friends. Mark a sports fan, started to play football when he was six years old. He was shy and weak, but now he has become taller and stronger. He gets to know the importance of communicating with his teammates and how to learn from mistakes. And he has made lots of friends with the same interest. They often have football training on the playground. They have more to talk about and enjoy the happiness after training.
