A happy kid is a healthy kid. Parents and adults working with kids can have a big influence (影响) on kids’ habits, including eating and exercise habits.

Kids naturally want to run and play and when they are encouraged to play sports or to take part in activities, they are generally able to have healthy weights and build strong muscles. The kids who have healthy weights and strong bodies are generally healthy. Sports or other activities not only help kids have strong healthy bodies, but help kids do better in school and have better goals and self-confidence. A child that keeps taking exercise can be braver and get along better with others. Adults can encourage children to take exercise by doing activities together, like family hiking, biking or bowling together.

Parents and other adults can set good examples of what foods are good to eat by preparing and serving healthy meals and avoiding going to fast food restaurants. Avoid buying candy and other sweets except when there is a special occasion, like a holiday or birthday. When adults set good examples, kids are more likely to follow them. When adults mostly eat fast food, candy and snacks, kids are more likely to eat the same types of foods.

Kids need to be taught that at there are many ways for them to stay healthy, but setting good examples is just as important as teaching them.

Instead of spending your spare time at work in the hope of making more money, maybe you should go to the sports center. That’s because it could make you happy just like the money you made during this time. An interesting new study in The Lancet found that people who enjoy doing exercise have a greater sense of happiness than those who don’t.

Researchers from Oxford and Yale Universities used data collected from more than 1.2 million Americans. They were asked, “How many times have you felt uncomfortable because of mental (心理的) problems in the past 30 days?” They were also asked about their exercise habits and were allowed to choose from 75 kinds of activities, including doing housework and childcare, running, weightlifting and cycling.

The researchers found that people who always exercise feel bad for about 35 days every year while the people doing little exercise feel bad for an additional (额外的) 18 days. From the study, people who exercised had 43 percent fewer days of poor mental health in the past month than people who did not exercise. All kinds of exercise can lead to a lower mental health burden (负担).

Social activities for exercising like team sports had an even more positive influence, although cycling was the most popular. Perhaps that’s because it takes place outdoors, which is always a way for people to break away from stress.

It is possible to get too much exercise. The right amount (量) seems to be three to five times per week, lasting 30 to 60 minutes each. The key point should be that any amount helps, so don’t force yourself to hit that perfect balance.

In our school, many students love sports. Every morning, we do morning exercises. We have PE lessons twice a week, but we do sports after school every day.

We like playing ball games. One sport is basketball. The boys like playing it best, and many of the girls enjoy playing it, too. Another sport is football. In every class there are lots of football fans. We often play volleyball when the weather is fine. Besides（除了……之外）ball games, some of the students like running, cycling and swimming.

We have school teams in basketball, football and volleyball. Our school teams often have matches with teams from other schools. When there is a match, many students go to watch and cheer for them. We have a sports meeting once a year. We like sports and sports help us to keep well.