The World Health Organization report compared the “obesity-related behaviors” for youngsters across 42 nations. And it reveals UK kids are among the laziest.

    Among teenage girls, the Scots topped the league table for most screen time, with 80 per cent spending at least two hours a day on computers. Wales came fourth with 76 per cent, and England seventh with 75 per cent. Girls in Armenia and Albania were least likely to spend hours idling online.

    Screen time figures for boys were even higher. Wales was second in the European “couch potato” league, with 85 per cent glued to their screens for at least two hours. Scotland was third with 84 per cent, and England 15th with 77 per cent. Boys in Switzerland and Portugal were least likely to dedicate two hours a day to sitting in front of a computer.

    Lead researcher Dr. Jo Inchley, from the University of St Andrews, said social media was impacting on kids' health. She said,“ We know there are risks, such as cyber bullying and impact on mental health. Also, there are longer-term impacts on physical health from being sedentary. One of the main challenges is that this kind of activity (social media and computer use) is so much part of young people's lives these days.” She said more needs to be done to get kids moving throughout the day.

    Dr. Steven Mann, research director for UK Active said the findings were “alarming”. He said, “Modern life has changed, but when teens are spending hours having fun with Facebook, Instagram and videogames, they simply aren't getting the exercise that they need. These alarming inactivity figures show that playtime is over before it has started for too many children, putting them at far greater risk of future conditions like heart disease, cancer and type 2 diabetes.”

    Tam Fry, from the National Obesity Forum, warned Brit teens are now “slaves to hand-held devices”. And the WHO warns four in five fat teens will continue to struggle with their weight throughout life. The report also shows less than half of UK youngsters consume fruit or veg daily.

    The best bikes for the beginners

    When it comes to purchasing your first bike, the choice is endless, making it tough to know what to go for. Here are the the best buys on the market right now.

⒈Boardman Cx Comp

    This is a cross country bike, and it's so multifunctional that you can handle any terrain(地势) on it , making it a great choice for those wanting to try various cycling subjects. If you leave on the thick tires it comes with, it can ride on various paths and can even handle some less demanding mountain bike routes. Alternatively, put on thin, smooth tires and treat it asa road bike. It has a basket and comes with Shimano Sora gears (变速器), which are outstanding for its price.

£650, Halfords

⒉Planet X RT-58 v2

    Planet X is based in Yorkshire, which means you'd probably have to buy this bike without seeing it. But it's worth it，because this is an excellent machine at a lower price, Planet X is a highly rated manufacturer and this model comes with Shimano Sora gearing.

£585, Planet X

⒊Specialized Allez E5

    Specialized is one of the biggest and most popular brands in cycling, and this is its hugely popular primary road bike. It comes with solid components from front to back and you'll look great out on the road.

£ 75, Evans Cycles

⒋Boardman Road Team Carbon

    If you can push your budget further still, this bike is worth the extra investment. The frame is made entirely from carbon, which is lighter, faster and more comfortable than the composition metal models above and gives you an all round and more enjoyable ride. It also means that if you get really serious about cycling, you don't have to upgrade as quickly as you would with a cheaper bike.

£800, Halfords

    Three years ago I worked for a few weeks as a doctor in a new dental clinic(牙科诊所）at Victor Harbor to the south of Adelaide and an hour further away than my usual workplace. My first day there was a driving to a new clinic and getting used to the clinical environment.

    As it was all new to me, I took off my rings: my wedding ring, and one that was an anniversary(周年纪念日)gift from my husband. I put them in a tissue(纸巾)and placed them beside my computer. During my lunch break, I noticed the tissue and thought that it did not look very clean and threw it into the rubbish bin. I went about my work and my day went well; I met new patients and felt that I had been productive

    Driving home at the end of the day, just moments before I reach that were missing. I felt the heat in my body rise, my cheeks(脸颊)burning red. I felt sick to my stomach.

    I spat an hour or so making calls, trying to find my rings. The first people I called were and clinical leader and they gave me a few phone numbers for cleaners I got in touch with already who managed the leaning services for the clinic, and she told me that the bins had already been collected.

    I knew nothing could be done now. I had lost my rings. Bu after two or so hours, I received the most amazing phone cal. The cleaner had gone through the bins and found my rings! I was so thankful to her, someone who had taken the trouble to go through the bins-which is not a pleasant task-to find my priceless rings.

    I worked at that clinic the following day, so I bought chocolates to thank this wonderful person. Unfortunately I did not get to meet her as she was not at work that day.

I had never picked up a camera before my freshman year in 2012, when my journey to an artist began. For four years, I 1 G-Star School of The Arts, where my 2 for photography and filmmaking were awaken.

Having seen my first short film, my teacher came over, saying: "You got a good 3 . Why not consider doing this as your profession. I think you've got a 4 in it". Then, it clicked. I, therefore, 5 my bank account and bought my first camera.

Since then, I was amazed by the 6 the world has to offer. I have to 7 , though: I, shy and chicken-hearted, tended to capture nature-related scenes, 8 anything to do with people.

As I was 9 my way, I started photographing myself, the only one I felt 10 with. The camera soon became my strongest 11 , serving as the tool for how I expressed myself. Gradually, I gained enough 12 to start taking photos of other people, greatly touched by how I was able to 13 the best in them through the lens (镜头).

Each year, I would look back on all of the shots I did that year and would 14 them to the first one I ever took in my career. Although the progress seemed substantial, I realized the key to growth as an artist is to never be 15 . This allows me to create progressively better work year after year.

After a busy morning, lunch can feel like just the pick-me-up you need-but sometimes the meal that you thought would energize you is the very thing that makes you want to nap at your desk.

Feeling tired after lunch, or post-meals in general, is known as postprandial somnolence—or, colloquially, the food coma.

Part of this phenomenon is due to basic physiology (生理学): When humans eat, most of our blood goes to the digestive organs to process the food, said Sandra Arévalo, director of community health and wellness at Montefiore Nyack Hospital in New York state.

The tendency to get tired after eating isn't inherently suggestive of something amiss (出错的). But there can be additional factors that worsen this natural response, making getting through the rest of the workday or any activities feel like a slog. Here's what to watch out for and how to make adjustments.

When it comes to why you feel overly tired after eating, a common cause is consuming meals that are heavy in terms of quantity or quality. Not eating breakfast can lead to overindulging later in the day if excessive (过度的) hunger makes controlling your appetite difficult, Arévalo said.

Sometimes, however, the makeup of certain foods can contribute to tiredness. Fats are the hardest nutrient to digest because their molecules are much larger than those of protein or carbs, said Julie Stefanski, a spokesperson for the Academy of Nutrition and Dietetics. If you had a meal high in fat—such as fried foods or pizza—that could make you feel tired. Meals high in added sugar or refined or highly processed carbohydrates can have the same effect.

The fiber in so-called whole foods like corns slows the absorption of sugar into the body, which means they don't cause blood sugar or insulin spikes and instead give you more stable, lasting energy, said Kristin Kirkpatrick, a registered dietitian at the Cleveland Clinic.

"A five-minute walk or something helps to improve circulation and alertness (机敏), as well," Arévalo said.