Did you know that sixty percent of your body weight is water? However, a loss of only two percent of this water through dehydration (脱水) during exercise can significantly affect your performance. The more you sweat, the more your exercise performance declines, unless you drink enough to replace your loss of fluids (液体).

    When you lose too much water, you can overheat quite easily, especially in a warm environment. But this is not the only problem you may face. Dehydration leads to your heart pumping much faster, which means exercise becomes more difficult and requires more effort. Despite these problems, however, many of us simply do not take enough fluids in when we head for the gym or set out on a run.

    So why is this? How do we manage to lose so much water without simply drinking more to replace it? Well, it's easier than you think. When we are at rest, we quickly become aware that we are thirsty and will put that right by having a drink. When we exercise, on the other hand, our thirst mechanism (结构) does not work as effectively, so we don't notice early enough that we are actually thirsty. In fact, we only start to fed thirsty when we have already lost around two percent of our body weight.

    Another problem is that, the more dehydration we become during exercise, the more difficult it is to prevent further dehydration-because our stomachs become intolerant (不能容忍的) to fluids and we do not absorb water properly, just when we need it most.

    The key thing about fluids and exercise is to manage your intake properly-regular small amounts are preferable, and some should be drunk before the period of exercise begins. You also need to match your intake to the sort of exercise you are doing. For example, for one hour of exercise, such as taking part in a 10 km run, you need to drink about two extra litres of water. For longer periods of exercise, sports drinks are recommended.

Choosing the Right Resolution (决定)

     Millions of Americans began 2014 with the same resolution they started 2013 with, a goal of losing weight. However, setting weight loss as a goal is a mistake.

To reach our goal of losing weight — the output, we need to control what we eat — the input ( 输入). That is, we tend to care about the output but not to control the input. This is a bad way to construce goals. The alternative is to focus your resolution on the input. Instead of resolving to lose weight, try an actionable resolution: “I'll stop having desert for lunch,” or “I'll walk every day for 20 minutes.” Creating a goal that focuses on a well-specified input will likely be more effective than concentrating on the outcome.

    Recently a new science behind incentives (激励) , including in education, has been discussed. For example, researcher Roland Fryer wanted to see what works best in motivating children to do better in school. In some cases, he gave students incentives based on input, like reading certain books, while in others, the incentives were based on output, like results on exams. His main finding was that incentives increased achievement when based on input but had no effect on output. Fryer's conclusion was that the intensives for inputs might be more effective because do not know how to do better on exam, aside from general rules like “study harder.” Reading certain books, on the other hand, is a well-set task over which they have much more control.

    As long as you have direct control over your goal, you have a much higher chance of success. And it's easier to start again if you fail, because you know exactly what you need to do.

    If you want to cut down on your spending, a good goal would be making morning coffee at home instead of going to a cafe, for example. This is a well-specified action-based goal for which you can measure your success easily. Spending less money isn't a goal because it's too general. Similarly, if you want to spend more time with your family, don't stop with this general wish. Think about an actionable habit that you could adopt and stick to, like a family movie night every Wednesday.

    In the long run, these new goals could become a habit.

    Will there be a time in our lives when cars don't crash? When we can just sit back and relax and our cars will drive themselves. Auto technology experts say “yes”. And they say that some of those advances may happen quicker than you might think.

    They will require the users to input the name of the destination or the complete address of the location that they want to go and the cars' artificial intelligence takes them there automatically without a driver. They will run on solar power in the daytime and ethanol fuel (乙醇燃料) at night. Toyota, BMW and Honda will completely control the trade of driverless car business together and will have the cheapest driverless cars. Fossil fuels will be completely incompatible (不相配的) with these cars.

    Driverless cars will not require a driver's license of any grade to operate. Anyone with basic literacy and computer skills who are at least 16 years of age will be legally allowed to operate the vehicle with absolutely no limits.This would give the young users permission to operate the driverless cars on major highways as well as secondary roads without needing a separate classification. In addition to all this, drunken people will be able to use their own automobiles to return home because they are not “driving”, the vehicle.

    What's more, car insurance will become obsolete(淘汰的) because there will be no more automobile accidents after the year 2025. This is because the driverless car will have all safety methods in place by the car's artificial intelligence to prevent automobile accidents. Global positioning systems will become mandatory (强制的) in all newly-produced cars after 2010, and will be the most important part in the driverless car.

    Nature Nurtures Farm plans to organize some charity activities in this summer. It hopes to teach young people about charity. The farm wants to get about 30,000 dollars through these activities. They will use the money to improve the public water system in the city. Here is the information about these activities.

    Farm Festival

    Time: July 18th, 9 am--4 pm

    Place: Nature Nurtures Farm

    Admission: 10 dollars for anyone 5 or older

    Other: You can enjoy music, feed farm animals, visit the fruit garden and take     pictures.

    Art show

    Time: July 18th, 2 pm--5 pm

    Place: State Capital Museum

    Admission: Free

    Other: 67 works of art will be here. You can buy any one of them, the money will go to the city public water system.

    Mentoring program

    Time: August 7th, 10 am--3 pm

    Place: Nature Nurtures Farm

    Admission: Free

    Other: Teens aged from 7 to 18 can join the program. Children with problems in helping others can get help from this program.

    Body language is the quietest, secretest and mostpowerful language of all! It is said that our body movements communicate about 50 percent of what we really mean while words only express 7 percent. So, while your mouth is closed, your body is just saying...

    Arms. How you hold your arms shows how open and receptive you are to people you meet. If you keep your arms to the sides of your body or behind your back, this suggests you are not afraid of taking on whatever comes your way. Outgoing people generally use their arms with big movements, while quieter people keep them close to their bodies. If someone upsets you, just cross your arms to show you're unhappy!

    Head. When you want to appear confident, keep your head level. If you are a monitor in class, you can also take on this position when you want your words to be taken seriously. However, to be friendly in listening or speaking, you must move your head a little.

    Legs. Your legs tend to move around a lot more than normal when you are nervous or telling lies. If you are at interviews, try to keep them still!

    Posture (姿势). A good posture makes you feel better about yourself. If you are feeling down, you normally don't kit straight, with your shoulders inwards. This makes breathing more difficult, which can make you feel nervous or uncomfortable.

    Mouth. When you are thinking, you often purse your lips. You might also use this position to hold back an angry comment you don't wish to show. However, it will probably still be noticed, and people will know you're not pleased.

    Face. When you lie, you might put on a false face. But that expression would crack briefly, allowing displays of true emotions such as happiness, sadness, disgust(厌恶)and fear to come through.