A US law requires that schools provide healthy choices students.
Public schools across the country (be) on a health kick since 2010. Because of the law, students say goodbye to fatty food and say hello to better eating habits in school. They also have been exercising more during the school day. It's up to schools to decide they obey the law. Most schools add healthy food and drinks instead of snacks and soft drinks.
(ask) kids to exercise more, a school in Northwestern Minnesota added more physical (activity) to the school day. Many schools also make sure that kids have good rest every day.
The goals of the law are to improve good health and to avoid (be) overweight.
Being overweight can lead to serious health problems later in life. Experts say the number of children aged 6~11 years old were overweight doubled (加倍) from 1980 to 2012. ." (good) thing to do is to get kids into the habit of getting lots of exercise and eating healthy meals!" Julia Lear, the (direct) of the Health Care Centre in a school, told us.
The bad health effects of sleep loss during the week can't be repaid by longer weekend sleep, according to a new study.
Researchers have long known that sleep deprivation (剥夺) can cause weight gain and increase other health risks. But for those who force themselves out of bed every weekday after too few hours of shut-eye, they hope turning off the alarm on Saturday and Sunday will repay the weekly sleep debt and remove any ill effects.
The research, published in Current Biology, crushes those hopes. Despite complete freedom to sleep during a weekend recovery period, people in a sleep lab who were limited to five hours of sleep on weekdays gained nearly three pounds over two weeks and experienced disorders that would increase their risk for diabetes(糖尿病) over the long term. While weekend recovery sleep had some benefits after a single week of sleep loss, those gains were wiped out when people fell right back into their same sleep-deprived schedule the next Monday.
"If there are benefits of catch-up sleep, they're gone when you go back to your daily schedule. It's very short-lived," said Kenneth Wright, director of the sleep and chronobiology lab at the University of Colorado at Boulder. "These health effects are long-term. It's kind of like smoking once was—people would smoke and wouldn't see an immediate effect on their health, but people will say now that smoking is not a healthy lifestyle choice. I think sleep is in the early stage of where smoking used to be."
Wright said that the study suggests people should put sleep in the first place—cutting out the "sleep stealers" such as watching television shows or spending time on their phones. Even when people don't have a choice about losing sleep because of child-care responsibilities or job schedules, they should think about getting sleep in the same way they would get a healthy diet or exercise.
What is health? "Health" means eating well, getting enough exercise, and having a healthy weight. Let's read the following rules.
⒈ Eat different kinds of foods, especially fruit and vegetables. We all know that eating fruit and vegetables can help us stay healthy, Remember that we can only get the nutrition we need by eating different kinds of foods, especially fruit and vegetables.
⒉ Drink water and milk more often. Besides water, kids need plenty of calcium(钙) to grow strong bones, and milk is rich in it. Every day, you should drink at least three cups of milk when you are 9 years old or older. You should also try to have less sugary drinks.
⒊ Listen to your body. When you are eating, notice how your body feels. Eating too much makes you feel uncomfortable.
⒋ Limit screen time. What's screen time? It's the time you spend watching TV, movies and playing computer games. The more time you spend on these siting-down activities, Try to spend more time on sports every day.
A. They include a lot of sugar.
B. When your stomach feels full, stop eating.
C. They can help you keep healthy.
D. but many of us only eat our favourite food.
E. the less time you spend playing sports.
F. the less food you will eat.
