Our body clock, or natural body rhythm, influences our energy and alertness. Paying attention to it can help us choose the suitable time of the day when we best perform specific tasks.

    The reality, however, is that most of us organize the time around work demands, school deadlines, commuting or social events. Doing whatever the body feels like doing is a luxury in today's fast-paced modern society.

    But that doesn't mean it isn't worth trying. Obeying our body clock has significant health benefits. Disrupting our natural body rhythm, on the other hand, has been linked to problems such as depression, obesity, or headache, says Steve Key, a biology professor.

    When the body clock can synchronize (使…同步) the rhythms of its natural processes, it “gives us an advantage in daily life”, says Key.

    According to him, when it comes to cognitive (认知的) work, most adults perform best in the late morning. As our body temperature starts to rise just before awakening in the morning and continues to increase until midday, our memory, alertness and concentration gradually improve.

    However, he adds, our ability to concentrate typically starts to decrease soon thereafter. Most of us are more easily distracted (分心) between noon and 4 pm.

    Alertness also tends to fall after eating a meal and sleepiness tends to peak around 2 pm, making that a good time for a nap.

    Surprisingly, tiredness may increase our creative powers. For most adults, problems that require open-ended thinking are often best dealt with in the evening when they are tired, according to a study in the journal Thinking & Reasoning.

    When choosing a time of the day to exercise, paying attention to your body clock can improve results. Physical performance is usually best from about 3 to 6 pm, says Michael Smolensky, a professor of biomedical engineering.

    Of course, not everyone's body clock is the same, making it even harder to synchronize natural rhythms with daily plans.

    A blocked airway(呼吸道) can kill someone in three to four minutes, but it can take more than eight minutes for an ambulance to arrive. So a simple procedure such as opening someone's airway can save their life while they're waiting for emergency medical help. This means you're more likely to give first aid to someone you know than a stranger.

    There are many misconceptions (误解) surrounding first aid. Below are the ‘most popular' ones with details of what you should do.

    You should put butter or cream on a burn. The only thing you should put on a burn is cold water — keep the butter for cooking. Put the affected area under cold running water for at least ten minutes.

    The best way to treat bleeding is to put the wound under a tap. If you put a bleeding wound under a tap you wash away the body's clotting agents(凝血剂) and make it bleed more. Instead put pressure on the wound with whatever is available to stop or slow down the flow of blood. As soon as possible call 999. Keep pressure on the wound until help arrives.

    Nosebleeds are best treated by putting the head back. If you put the head back during a nosebleed, all the blood goes down the back of the airway. Instead advise them to tilt(倾斜) their head forwards and ask the person to pinch(捏) the end of their nose and breathe through their mouth.

    You need lots of training to do first aid. You don't — what you mostly need is common sense. You can learn enough first aid in a few minutes to save someone's life — whether it's from a book, attending a course or watching videos online.

    Remember: anyone can save a life

    China is a big country, and there is no simple answer to the question “When is the best time to visit China? ” There are two best times to visit China, depending on your preference.

    October

    Things to do: hike on the Great Wall, photography tour

    Places to visit: Beijing, Xi'an, Shanghai, Guilin, Jiuzhaigou, Chengdu

The best time to go to China is early autumn (October).

    Most of China has warm temperatures, and the summer rains have stopped (apart from around HongKong and Sanya) so it's pretty dry. The autumnn colours are also amazing. It is quiet at tourist attractions for most of the month, as the summer holiday travel crowds have gone. But try to avoid October 1st -7th, which is the Chinese National Day holiday, as attractions, transport and hotels are packed with Chinese tourists and prices go up a lot.

    Late Spring (April to May)

    Things to do: appreciate flowers, Li River cruise, ethnic festivals

    Places to visit: Beijing, Xi'an, Guilin, Huangshan, GuiZhou, Zhangjiajie

    The second-best time to travel to China is probably in April and May, when the flowers are in bloom and the temperatures are warming up. In late spring, temperatures across China are getting into the 20s (℃), except the extreme northwest and northeast. While the North of China is still dry, the summer rains have already begun in the South. This could actually improve the view in the form of mountain fog in mountainous areas like the Li River and the Yellow Mountains.

    Ethnic festivals in GuiZhou are concentrated in April and May, such as the Sisters' Meal Festival. If you are interested in Miao and Dong ethnic cultures, this is a good time to visit.

    Travel prices are average: cheaper than June to October, but more expensive than the lower season from November to March.

All Aboard for a Family Trip by Train

    If you're looking for a family vacation idea, look no further. Explore America with Amtrak. On the train, your family will have plenty of room to spread out and relax.

    Once on board, the family can take in the scenery from the Sightseer Lounge（观景车厢）. Plus, most of our overnight trains feature Dining cars that serve three meals a day, with full menus and table service. If you're looking for lighter fare, grab a bite to eat or a drink in the Café car. You can also reserve Sleeping car accommodations and let the gentle rhythms of the train sway you to sleep. It's the best way to arrive at your destination rested and ready to go.

    Learn More about the Onboard Experience on www.amtrak.com

    A Dining Experience like No Other

    From full sit-down meals to more informal food service, many trains have one or more option for onboard dining. If you're not hungry, you might start to hear your stomach rumbling（腹鸣） after looking at our menus. We provide you with more dining choices, onboard dining reservations and the different types of dining cars, like long distance dinning car, lounge car and café car.

    Sleeping Accommodations

    Sleeping accommodations are available on most long-distance routes. Amtrak trains traveling on long-distance routes typically use either two-level Superliner or one-level Viewliner train car equipment, each of which include bedrooms arranged in various configurations and private and public bathrooms and showers.

    Seating Accommodations

    On most Amtrak trains, you have three options for seating accommodations. The availability of these options varies depending on your route and the type of train equipment in use:

    Coach Class: Designed for You to Relax.

    Business Class: More Amenities. More Comfort.

    First Class: Exclusively on Acela Express.

    Monthly Talks at London Canal Museum

    Our monthly talks start at 19:30 on the first Thursday of each month except August. Admission is at normal charges and you don't need to book. They end around 21:00.

    November 7th

    The Canal Pioneers, by Chris Lewis. James Brindley is recognized as one of the leading early canal engineers. He was also a major player in training others in the art of canal planning and building. Chris Lewis will explain how Brindley made such a positive contribution to the education of that group of early "civil engineers".

    December 5th

    Ice for the Metropolis, by Malcolm Tucker. Well before the arrival of freezers, there was a demand for ice for food preservation and catering, Malcolm will explain the history of importing natural ice and the technology of building ice wells, and how London's ice trade grew.

    February 6th

    An Update on the Cotsword Canals, by Liz Payne. The Stroudwater Canal is moving towards reopening. The Thames and Severn Canal will take a little longer. We will have a report on the present state of play.

    March 6th

    Eyots and Aits-Thames Islands, by Miranda Vickers. The Thames had many islands. Miranda has undertaken a review of all of them. She will tell us about those of greatest interest.

    Online bookings:www.canalmuseum.org.uk/book

    More into:www.canalmuseum.org.uk/whatson

    London Canal Museum

    12-13 New Wharf Road, London NI 9RT

    www.canalmuseum.org.uk   www.canalmuseum.mobi

    Tel: 020 77130836

The teenage Snowboarder.

I was born in Denver, USA. and started snowboarding aged eight when my dad took me to a resort in the mountains. About two hours from Denver. The hill looked unbelievably steep and scary. So My dad had to do a lot of persuading to get me on a board. Because I was so young. I hadn't even thought of asking him if I could start snowboarding? But he was already into it and wanted me to love it, too—-He made it look so simple, and in the end I managed just fine.

After this experience, it wasn't long before I'd developed a love of sport and had improved my ability too. I started competing aged ten. Some people entered loads of competitions and ended up getting bored of snowboarding. But my love of taking part and winning got stronger as I got older, which always help me to push myself harder. I enjoyed not having a fixed plan and sometimes this went well, like when I became the first female ever to get a perfect 100 at a local competition. I wasn't sure I'd even attempted the jumps that got me the score until I actually set off. That achievement increased my trust in my own abilities.

During the summer I focused on training and my studies while there's no snow. Although I trained daily, it's nice not having to stick to quite a strict diet like I did in the winter. I also got to spend lots of time with my friends then. It's the best way of dealing with not being able to do what I loved so much and what I was really good at.

Now. I have to think carefully about my future. Snowboarding is such a huge part of my life now. But I also feel it's important to have something else I can do. just in case I don't succeed as a professional snowboarder or I get injured. I'm wondering whether becoming a doctor is a possibility. if my active life allows time for doing a college degree, it's impossible to imagine myself growing tired of the sport. But I can't go on snowboarding my whole life.