Robin Dunbar, a psychologist and the director of Oxford University's Social and Evolutionary Neuroscience research department, believes that every guy should spend at least two hours a week with 4-5 buddies. They can use this time any way they choose, from sports to going to bars. According to Dunbar, guys with faithful friends are less likely to be sad and have a better immune system.

Examine the yellow block above for a long time. Is it dizzying after a while? Perhaps even nauseous? If this is the case, you are not alone. A number of studies have found that the colour yellow can make people feel dizzy and nauseated. As a result, it is frequently used sparingly (or very strategically) by those in advertising and is almost never used in the interiors of various modes of transportation, most notably aeroplanes.

Another fascinating truth about Russia is that Russians, in general, have a lot of superstitions and customs. One of the most prevalent customs is to gift flowers only in odd numbers. Many Russians think that an odd amount of flowers should only be used in graves. If you gift an even amount of flowers to a Russian, they will take it personally. In addition to not giving away an even amount of flowers, Russians believe that clothing should not be worn inside out. The Russians think that if you put your clothing on inside out, you will be defeated.

You may have noticed that women take more risks than men, and there is a scientific reason for this. Women have a larger anterior cingulate cortex than men, which is the part of the brain that weighs options when making a decision. Some argue that this was evolution's way of making women better caregivers and saving the "tribe" when it came to gathering food and establishing social structures.

When kissing, 70% of individuals turn their heads to the right. A German scientist who was monitoring kissing couples in airports, train stations, and beaches came to this conclusion. Perhaps this head posture is related to being right-handed.

According to the National Library of Medicine in the United States, 12% of people only dream in black and white. People under the age of 25 say they almost never dream in black and white, whereas people over the age of 55 say they dream in colour about 75% of the time.

Many Koreans were forced to fight for the Japanese cause, but one soldier is said to have fought for almost everyone. According to folklore, after fighting for the Imperial Japanese Army, Korean soldier Yang Kyoungjong was captured and forced to serve for the Soviet Red Army, and then the German Wehrmacht. During this period, the Allies arrived in France, and Yang was captured by the US Army.

Italy was a dictatorship until 1945, while having a royal dynasty until 1946. Following WWII, the country decided to become a republic, and King Umberto II governed briefly from May 9 to June 12, 1946. He spent the rest of his days in exile in Portugal. In Italy, he is regarded as "the May King," a reference to his exceptionally brief rule.

Apart from  butter-fingers, crossfire, dustbin, fairy story, slow-coach and whoosh, Charles Dickens is also credited with coining the term "boredom" in the Oxford English Dictionary, which he used in his novel Bleak House (1852-3), but this has since been traced back even further, to 1830.

iPhone was released in the USA on 29 June 2007. At that time, 2 models of the iPhone were released. The difference between the two models was in the internal storage and the price. The 4 GB model was priced at $499 and the 8 GB model was priced at $599. Tens of thousands of people waited days before the launch for the iPhone in front of the AT&T and Apple retail stores for buying the iPhone. Matter of fact, lots of stores reported stock shortage within half an hour of the release.

The date of February 14 was formally named "St. Valentine's Day" by Roman Pope Gelasius around the end of the fifth century. However, it wasn't until the Middle Ages that the festival became connected with love and passion, a tradition that sprang from the widespread belief in France and England that birds began their mating season on February 14.

If you're familiar with Spider-Man, you'll know that one of his most potent talents is his renowned Spider Sense. This heightened sense had alerted him of impending threats and had saved his life several times. His spidey sense was always on and practically hard to avoid. It was unaffected by darkness or blindness. That alone makes it incredible, but it is far more potent than you may expect. It alerted him of existential hazards to his well-being in addition to acute bodily concerns. It would even warn him to any possible witnesses when he changed his outfit, for example.

Psychologists have examined a phenomena known as reactance, which states that when individuals think that particular liberties are being taken away, they not only break the law, but break it significantly more than they would normally in order to reclaim their freedom. This might be one of the finest psychological facts to explain why a youngster who isn't allowed to use his phone in class will chew gum while texting.

We frequently get stuck in our heads with a song we don't even like. To get rid of the annoyance, simply listen to the song until the very end. This is because the so-called "earworm" is on a loop, and finishing the song helps you get rid of it.

Martin Lotze, a German researcher, studied the brains of both professional athletes and professional writers and discovered that their brain activity during athletic competition and the writing process was very similar. Lotze discovered an interesting difference between professional and amateur writers: professional writers used their speech-processing centres of the brain to develop their stories, whereas amateur writers relied on their vision centres to imagine the story first.

Life is a difficult and dirty affair. If you don't want to lose brain cells, you might want to skip this calorie-burning tip. A 45-minute stroll with your dog would be a safer method to burn 150 calories.

The notion that Einstein struggled at school is a fiction. A pre-teen Einstein would study mathematics and physics for fun over the summers, finally mastering differential and integral calculus by the age of 15. But it doesn't mean he was a model student. Einstein despised rote learning and refused to study things that bore him. As a result, when the stubborn number-lover took the polytechnic school admission exam in Zurich, he flunked the language, zoology, and botany parts.

Unfortunately, Apple has officially announced that they will not share the iPhone sales figure anymore back on November 1, 2018. So, we actually don’t the current sales figures of the iPhone. However, we can tell you the number from 2007 to 2018, though. Reports say that Apple has sold over 2.3 billion units of iPhone in this period. And, they sold about 220 million iPhones in 2018 alone.

Scientists from Sydney's Garvan Institute of Medical Research discovered that shivering in the cold for 10 minutes burns more fat than a one-hour workout. These new discoveries build on a past study into brown fat, a kind of fat tissue that consumes energy rather than storing it. So Start shivering...

The Salem witch trials took place between February 1692 and May 1693 in Salem, Massachusetts. Nearly 200 individuals, including the destitute, the elderly, and a four-year-old kid, were accused of witchcraft. The vast majority were imprisoned, and some were executed by hanging. However, none of these people were ever burned alive.

You may have outgrown the hours-of-making-out-on-the-couch stage of your relationship, but you shouldn't dismiss kissing as a pleasurable pastime with your partner—and also a type of exercise! According to Woman's Day's sexologist, one hour of mild kissing burns 68 calories. "Oh my god, an hour?" you may be thinking. Yes, an entire hour. You've got this! You've always wanted to work out with your hubby, and now is your chance.

Walter Arnold of the English town of Paddock Wood, Kent, was the first person to be charged for speeding, according to Guinness World Records. On January 28, 1896, Arnold was caught driving four times the speed limit in his 19th-century Benz—but because the speed limit at the time was only two miles per hour, he wasn't travelling too fast by today's standards. The officer had to track him down on his bike, issuing a £4 7s penalty and earning Arnold the swift distinction.

Official statistics show that over half of all persons up to the age of 64 have the equivalent of a high school graduation, significantly below the OECD average of nearly 75%. Younger generations, on the other hand, are defying the trend, with 65 percent of millennials obtaining the certificate — and the number is climbing.