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Thursday, 29 March 2012

Do you Know Top ten wonderful things about humans

1/Blushing
Blushing and embarrassment go hand in hand. Feeling flushed is such a natural response to sudden self-consciousness that if it weren’t part of an emotionally crippling experience, it could almost be overlooked. But blushing is unique, which is why scientists want to know more about blushing. While the psychology of blushing remains elusive, we do understand the physical process involved. Here’s how it works.Blushing from embarrassment is governed by the same system that activates your fight-or-flight response: the sympathetic nervous system. This system is involuntary, meaning you don’t actually have to think to carry out the processes. In contrast, moving your arm is a voluntary action; You have to think about it, no matter how fleeting the thought is. This is good, because if moving your arm was involuntary, people would end up buying a lot of stuff they don’t want at auctions.

2/Laughter
Laughter is a great thing — that’s why we’ve all heard the saying, “Laughter is the best medicine.” There is strong evidence that laughter can actually improve health and help fight disease. In this article, we’ll look at laughter — what it is, what happens in our brains when we laugh, what makes us laugh and how it can make us healthier and happier. You’ll also learn that there’s a tremendous amount that no one understands yet. Human beings love to laugh, and the average adult laughs 17 times a day. Humans love to laugh so much that there are actually industries built around laughter. Jokes, sitcoms and comedians are all designed to get us laughing, because laughing feels good. For us it seems so natural, but the funnything is that humans are one of the only species that laughs. Laughter is actually a complex response that involves many of the same skills used in solving problems.

3/Pubic hair
The development of pubic hair can be assessed using the Tanner scale. Before the onset of puberty, the genital area of both boys and girls has very fine vellus hair, referred to as Tanner stage 1 hair.As puberty begins, the body produces rising levels of the sex hormones known as androgens, and in response the skin of the genital area begins to produce thicker and rougher, often curlier, hair with a faster growth rate.The onset of pubic hair development is termed pubarche. The change for each hair follicle is relatively abrupt, but the extent of skin which grows androgenic hair gradually increases over several years.Pubic hair and axillary (armpit) hair can vary in color considerably from the hair of the scalp. In most people it is darker, although it can also be lighter. In most cases it is most similar in color to the eyebrows of the individual.On some individuals, pubic hair is thick and/or coarse; on others it may be sparse and/or fine; these varieties may appear in either sex. Hair texture varies from tightly curled to entirely straight. Pubic hair patterns can also vary by race and ethnicity.

4/Adolescence
Adolescence is the life stage that bridges childhood and adulthood. In general, it represents the second decade of life. Many psychologists have begun to seperate this life stage into several, including early adolescence (10-13 yrs), traditional or mid-adolescence (14-18 yrs), and late adolescence or youth (19-23 yrs).The development of adolescents is characterized by continuity and discontinuity. Physically, adolescents are still influenced by their inherited genes, but now the inheritance interacts with new social conditions with family, peers, school, dating, and friendships. Socially, an adolescent has already spent years interacting with parents, friends, and teachers. Now, though, new experiences arise andrelationships take on a different form, especially concerning dating and intimacy. And lastly, thecognitive development of adolescents involves thought processes that are more abstract and idealistic.Adolescents contribute to society in countless, influential ways. They publish newspapers and magazines, run businesses, and serve as leaders in schools and communities.

5/ sleep and dreams
The human brain is a mysterious little ball of gray matter. After all these years, researchers are still baffled by many aspects of how and why it operates like it does. Scientists have been performing sleep and dream studies for decades now, and we still aren’t 100 percent sure about the function of sleep, or exactly how and why we dream.Dreams can occur in any of the four stages of sleep, but the most vivid and memorable dreams occur in the last stage of sleep (also commonly referred to as REM sleep). The sleep cycle repeats itself about an average of four to five times per night, but may repeat as many as seven times. Thus, you can see how a person has several different dreams in one night. However, most people only remember dreams that occur closer toward the morning when they are about  to wake up. But just because you can’t remember those dreams do not mean that they never happened. Some people believe that they simply do not dream, when in reality, they just don’t remember their dreams.

6/Altruism
Altruism (also called the ethic of altruism, moralistic altruism, and ethical altruism) is an ethical doctrine that holds that individuals have a moral obligation to help, serve, or benefit others, if necessary at the sacrifice of self interest. Auguste Comte’s version of altruism calls for living for the sake of others. One who holds to either of these ethics is known as an “altruist.”Altruism may be seen as similar to utilitarianism, however an essential difference is that the latter prescribes acts that maximize good consequences for all of society, while altruism prescribes maximizing good consequences for everyone except the actor. Arguably, however, since the rest of society will almost always outnumber the utilitarian, a genuine utilitarian will inevitably end up practicing altruism or a form of altruism.

7/Art
Art is a (product of) human activity, made with the intention of stimulating the human senses as well as the human mind and/or spirit; thus art is an action, an object, or a collection of actions and objects created with the intention of transmitting emotions and/or ideas.The meaning of art is explored in a branch of philosophy known as aesthetics, whereas disciplines such as anthropology, sociology and psychology analyze its relationship with humans and generations.Art tends to facilitate intuitive rather than rational understanding, and is usually consciously created with this intention.citation needed] Fine art intentionally serves no other purpose.dubious – discuss] As a result of this impetus, works of art are elusive, refractive to attempts at classification, because they can be appreciated in more than one way, and are often susceptible to many different interpretations. In the case of GĂ©ricault’s Raft of the Medusa, special knowledge concerning the shipwreck that the painting depicts is not a prerequisite to appreciating it, but allows the appreciation of GĂ©ricault’s political intentions in the piece. Even art that superficially depicts a mundane event or object, may invite reflection upon elevated themes.

8/Superstition
Superstitions began centuries ago when our ancestorstried to explain mysterious circumstances or eventsas best they could with the knowledge they had.For instance, before the development of science explainedsuch strange things as why mirrors show our reflectionsor why shadows appear when it’s sunny, ancient peoplereasoned that a shadow or reflection was part of their soul.If someone broke something onto which the shadowor reflection appeared, people believed that their soul was harmed.Therefore, when a person broke a mirror it was considered unlucky or harmful.Today we know that reflections and shadows are not part of our soulsbut if someone still believes it is bad luck tobreak a mirror they are said to be superstitious.So a superstition is “a belief or practice” that people cling to even afternew knowledge or facts prove that these silly beliefs are untrue.

9/Kissing
Kissing is the beautiful act of one pair of lips touching another pair. It’s really not as easy as it looks in the movies. Making out can be pretty nerve wracking if you’re not sure what you’re doing. Whether you’re a teen starting out – anxious about an awkward meeting of noses and how to hide that hickey – or an adult wanting to get more creative with your technique and impress your partner, we’ve got all the information you need right here.Depending on the culture, relationship and context, a person may kiss another on their lips, cheek, head, hand and each of these gestures may carry a different social significance.The act of kissing on another person’s lips has become a common expression of affection among many cultures worldwide. Yet in certain cultures, kissing was introduced only through European settlement; prior to this, kissing was not a routine occurrence. Examples of this include certain indigenous peoples of Australia, the Tahitians, and many tribes in Africa

10/Nose-picking
Nose-picking is defined as the act of inserting a finger (or in some cases an object) into one’s own nostrils with the aim of removing a piece of dried nasal secretion obviously, we all know that. Nose-picking (or referring to it) in public is generally frowned upon and perceived as a disgusting, bad habit. Despite this, it is a ubiquitous behaviour. Nose-picking is practised by the majority of individuals – regardless of gender, age and cultural background. Nose-picking is, bar a few rare exceptions, harmless.In many cultures nose-picking is considered a private act aki          to defecation, urination, flatulence, and belching. Mucophagy, the act of eating the extracted mucus, may be considered more taboo, and is sometimes portrayed in comedies. To be caught nose-picking may be considered humiliating.

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