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.

Start counting those sheep, since sleep is crucial. Many of history's worst tragedies, such as Chernobyl, Three Mile Island, the Challenger explosion, and the Exxon Valdez oil leak, were caused by a lack of sleep.

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.

Russians are divided on this truth regarding Poland, however it is widely assumed that vodka was developed in Poland. The spirit was first mentioned in recorded form in Polish court papers in 1405, and it was first utilised as medication. Poland has been manufacturing the popular drink since the Middle Ages, and the Polish still produce some of the greatest vodkas in the world, generating over 260 million litres of it each year.

There are many misconceptions surrounding Washington, but one of the most common has to do with his teeth. Washington is commonly assumed to have had wooden dentures. This is not at all the case. While Washington had severe oral issues and wore dentures, wood was never employed as a material.

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 Russian truth is that Russians learn not to grin as they get older. While many cultures consider smiling to be a sign of happiness and friendliness, Russians do not. Smiling, according to Russians, is a sign of weakness and not expressing one's actual sentiments. Russians grin when they see individuals they know and care about, but not when they see strangers, as many other cultures do. If you smile at a Russian on the street, don't expect them to reciprocate the favour; nevertheless, while driving around Russia, we noticed that many Russians smiled and waved back.

Why doesn't your stomach digest itself if it has so many enzymes and acids that it can digest a piece of meat? It turns out that it sort of does. The cells that line your stomach proliferate fast in order to replace the cells that are killed in the course of their everyday tasks. Every three days, we develop a new gut lining.

This curiosity has a social explanation rather than a scientific one. For centuries, society and the media have pushed women to hold themselves to a certain standard, whether it's small feet or a perky behind, and the majority of women have chosen stylish presentation over comfort.

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.

John Duns Scotus, a thirteenth-century philosopher, believed that wearing a pointed cap would help spread knowledge from the tip to the brain, and his "Dunsmen" followers wore them as a badge of honour. However, his ideas became less popular in the 1500s, and the meaning of the Duns cap was turned on its head, becoming something of a joke.

When explaining behaviour, we often attribute positive outcomes to internal factors and negative outcomes to external forces. When it comes to other people's actions, however, we usually attribute them to internal characteristics. For example, if we receive a poor grade on a paper, it is the fault of the teacher; if a classmate receives a poor grade, it is because he did not study diligently enough. The actor-observer bias refers to this tendency.

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.

Do you consider all of your decisions, weighing all of your options and calculating the impact of each outcome? You may believe you are, but you are incorrect. The majority of your decisions are made subconsciously because your conscious mind would be overwhelmed with information and you would likely become mentally frozen. This is because your brain receives over 11 million bits of information every second, and there simply isn't enough "brainpower" to process it all consciously.

Do you despise all things enjoyable? You might be suffering from Cherophobia! People who have this fear tend to avoid any circumstance that others would consider to be enjoyable or cheerful. Cherophobia is derived from the Greek words chero, which means "to joy," and phobia, which means "fear." If you have Cherophobia, please stop reading these fascinating facts right now! We can't comprehend the mental anguish you've gone through by reading this far.

It doesn't seem to matter what others say about a new lover—in our eyes, he or she is always ideal. This blindness is essential for us to progress in our relationship. It is frequently required to progress to the "attachment stage," as scientists refer to it so that they can stay in love long enough to produce and raise children; in other words, to populate the globe.

According to research, our brain can only keep 3-4 pieces of information at a time. Furthermore, this data can only be saved for 20-30 seconds. We forget it after this period unless we keep renewing it in our minds over and again. For example, you are driving while chatting on the phone (do not do this!). The person on the other end of the line gives you a number, but you can't write it down, so you memorize it. You repeat the number several times to keep it in your short-term memory until you disconnect and write it down.

A girl's brain is busy developing fine motor skills, verbal skills, and social skills in her first five years of life, all of which are highly valued by parents and teachers. Meanwhile, a boy's brain is hard at work developing gross motor, spatial, and visual skills. All of these abilities are useful for hunting. As a result, when it comes to learning and fitting in, boys frequently start school at a distinct disadvantage.

Austrians celebrated their victory over Hungary during the 1848 revolution by clinking their drinks during a toast. Since then, Hungarians have avoided clinking their glasses while toasting since it reminds them of their loss. Instead, if you're drinking a beer in Hungary, say "Egészségedre" while looking your drinking companions in the eyes.

Now, before you start freaking out, please hear us out! Sedentism is encouraged in today's environment. After all, we sit during our commutes, to eat, to watch TV, to work, to socialise with our friends, and so on. It turns out that even if you exercise regularly, it won't keep you safe from the risks of the "office lifestyle."

If you ask an American what they are, they will respond American. If you ask someone from the United Kingdom, they may claim to be British. According to The Rakyat Post, if you ask a Malaysian, they will most likely reply they are Malay, Chinese, Indian, or Dan Lain Lain, which means "other." Malaysia has a Malay population of 55%, a Chinese population of 25%, and an Indian population of 10%. There are more than 60 sub-ethnic groupings in Sarawak and Sabah alone. Malaysia is a unique melting pot of cultures, with a diverse spectrum of nationalities, and is a popular destination for travellers and expats from all over the world.

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.