In our everyday lives we meet situations in which we take many things for granted（不去重视）.We only treasure things when they are gone.This is a sad truth of human nature.One day,I found myself as a witness to a similar situation.

    One evening,I left work and boarded the train.After entering,I noticed something unusual.The center of the car had a few empty seats while both ends were crowded with people standing.I didn't pay much attention and sat down on one of the empty seats.I sensed a funny smell.It wasn't long before I noticed a homeless person sleeping on three seats in front of me.He was bleeding from his nose.Why wasn't anyone helping him?

    His clothes were torn and he was giving off a strange smell.Along with the smell,his eyes were dull,watery and red.Occasionally he scratched himself and people looked at him as if he had committed a crime.As the train stopped at stations and more people came in they covered their noses and faced away from him.All the seats around him were empty.

    Suddenly,he began to swear at the people around him.A plain clothes policeman who looked like a construction worker took out his certificate and showed it to the homeless man.The officer,not wanting to touch the homeless man, told him his rights and directed him to exit the train.As the officer walked the man out of the train,the homeless man turned around and said "MY HOME!" and started crying.

    A man doesn't value things until they are gone.If he didn't have a home,at least he had freedom.Now he has neither.No one wants to help someone who won't help himself.

    Laughter Yoga(瑜伽) is one form of yoga. Madan Kataria, a doctor in Mumbai, India invented it. He believed that people had forgotten how to really laugh. Through his research he made an interesting discovery. The human mind does not know the difference between forced laughter and real laughter. Forced laughter can also lead to a feeling of happiness.

    And then Kataria had the idea for a group of people who would laugh together. He gathered a few of his friends together. They met in a public park in Mumbai. That small group grew and grew! And this is how people began to do Laughter Yoga. People doing Laughter Yoga usually meet together in a Laughter Club. Kataria's friends formed the first Laughter Club in 1995.

    Today, there're over 5,000 Laughter Clubs in 53 countries. But what exactly do people do in a Laughter Club? People in Laughter Yoga meetings usually do a series of exercises. The exercises include body movement, correct breathing, and of course, laughter! At the beginning of the meeting, people may have to force themselves to laugh. But by the end, everyone is usually laughing in a real way! Each meeting is a little different. But there are common exercises groups may do.

    Experts say that the exercises help blood move around the body faster. They also say that Laughter Yoga helps people deal with the bad things in their lives. They say that a person may go into a Laughter Club meeting feeling sad, angry, or worried. But then, people act happy. After a time, forced laughter becomes real laughter. This is one reason why people may enjoy laughter Yoga so much

    Motherhood may make women smarter and may help prevent dementia (痴呆) in old age by bathing the brain in protective hormones (荷尔蒙) , U.S. researchers reported on Thursday.

    Tests on rats show that those who raise two or more litters of pups do considerably better in tests of memory and skills than rats who have no offsprings, and their brains show changes that suggest they may be protected against diseases such as Alzheimer's (早老痴呆症). University of Richmond psychology professor Craig Kinsley believes his findings will translate into humans.

“Our research shows that the hormones of pregnancy are protecting the brain, including estrogen(雌激素), which we know has many neuroprotective (保护神经的) effects,” Kinsley said.

    “It's rat data but humans are mammals just like these animals are mammals,” he added in a telephone interview. “They go through pregnancy and hormonal changes.”

    Kinsley said he hoped public health officials and researchers will look to see if having had children protects a woman from Alzheimer's and other forms of age-related brain decline.

    “When people think about pregnancy, they think about what happens to babies and the mother from the neck down,” said Kinsley, who presented his findings to the annual meeting of the Society of Neuroscience in Orlando, Florida.

    “They do not realize that hormones are washing on the brain. If you look at female animals who have never gone through pregnancy, they act differently toward young. But if she goes through pregnancy, she will sacrifice her life for her infant—that is a great change in her behavior that showed in genetic alterations to the brain.”

    When Lina was awoken by the sound of thunder, she was alone on the island. The air was cool and bullfrogs croaked. It was that brief moment when the summer sun had set but the stars hadn't yet appeared. Lina rubbed her eyes and looked around.

    "Hello?" she called. "Celia? Marie?"

    There was no response.

    The moon was rising now, shedding light on the island. They had always called it "Forgotten Island" because no one but they seemed to remember its existence. It wasn't on any of the maps they could find, and even the forest rangers didn't know about it. Lina loved that the island, hidden in a heavily-wooded side stream of the river, was a secret between the three friends -her, Celia, and Marie.

    But now Lina was here alone, and it was night. Worse still, it was her own fault.

    "Come on, Lina, let Marie row the boat." Celia had said. Marie was two years older than Lina, but she was a hopeless rower. That's why Lina refused and rowed the boat to the island. The argument that followed the refusal took the usual form. Celia took Marie's side, as she always did. Lina had exploded and yelled at them to just leave. So they got back in the boat and left.

    A bolt of lightning crossed the darkened sky, accompanied by a deafening thunder clap. The storm was here. As the first cold raindrop slid down her neck, Lina's mind returned to her current problem. She was stuck here by herself. She just hoped she didn't become as forgotten as the island. The thought of it sent a chill（寒意）down her back.

    Suddenly, Lina spotted something in the water. It was a boat, and inside it were Marie, Celia, and Marie's dad, who was steering through the fast flowing waters. As the boat approached, they saw Lina waving and the worried expressions on their faces turned to relief.

    In her excitement Lina jumped into the river. Only once she was in the icy water did she remember how fast the water was moving. Luckily a strong arm reached into the water and pulled her out. She smiled weakly at Marie's dad and, without a word, hugged Celia and Marie. They didn't seem to mind becoming wet.

More than 400 athletes across a variety of sports, ages and levels of experience were questioned for the study by sports psychology experts from Staffordshire University and Manchester Metropolitan University. The findings reveal that athletes' belief systems—specifically irrational（非理性）beliefs—are related to poorer self-confidence, and in turn, greater competitive anxiety and depressive symptoms.

"Phrases that reflect self-depreciating（贬低）beliefs such as ‘If I lose, I'm a failure' or ‘If I face setbacks, it shows how stupid I am' are warning signs," said the authors. Paul Mansell, Lecturer in Sport and Exercise Psychology at Staffordshire University, said, "Despite the psychological benefits of physical activity, studies frequently report poor mental health in athletes, which may be exacerbated by adversities, such as injury, de-selection, and performance pressure. We investigated athletes' beliefs, how they view stress, their levels of self-confidence and put all this data together to work out what might predict psychological well-being. We found irrational beliefs to be a core reason for symptoms of poor mental health in athletes."

This is the first known study that has examined irrational beliefs, self-confidence, and the psychological well-being of athletes all together. Irrational beliefs are extreme, rigid, and illogical ideas that people hold. For example, a person might believe that they "must" get what they want, or that just because they have failed, they are a "complete failure".

"We can all work to help athletes develop mindsets that help them deal with the challenges of sport and life. By encouraging rational and logical beliefs about performance, we can help athletes to stay healthy amidst the high demands of competitive sport," said Paul Mansell.

The author s propose Rational Emotive Behavior Therapy（REBT）as an effective tool for protecting self-confidence. REBT helps athletes to challenge these self-depreciating beliefs and develop beliefs that are more helpful and healthy. For example, rather than believe "I am a failure if I fail", this might be countered with "Failing is not ideal, but it does not mean that I am a failure".

They talk about the straw that broke the camel's back, but really it should be the password that wiped out my memory bank. 

I was going along fine -with instant recall of my bank PIN (密码)，my mobile phone number and the date of my cousin's birthday before I downloaded a gas station payment app for its new customer discount. It asked me to create a password. When I typed in "gas 1", it was rejected for not being complex enough. I tried again: "IHateHearlessOilCompanies@". But that was too long and didn't include "at least one number". But here is the thing: as soon as 1 added the fresh password into my memory, I instantly forgot all the others. My brain had hit its limit for passwords. I now know nothing. 

I had entered some passwords in a notebook. Of course, I didn't write down the actual passwords, in case it fell into the wrong hands. Instead, I masked them in a way that only a family member could figure them out. For example, I combined my bank PIN with our postal code, then added it to a list of phone numbers. It would fool even Albert Einstein.

Maybe we need a system like the one we use to remember people's names. You know, you form an association between a person's characteristics and their name by whispering "Skinny George, Skinny George" in heart after meeting them. The risk is that, upon seeing him, you'll burst out the phrase. "Skinny George" might not mind, but it's possible "Boring Betty" will. As for remembering passwords as you change them, you could simply use the first and last letters of your favorite singer's greatest hits, together with the year of their release.

Maybe I'll try that one out- -but only after describing the system in the notebook. Then I'll hide it in a place so secret that I'll never remember where it is.