Researchers at Arizona State University made the ground-breaking discovery that the ability to see red in all its glory is frequently gender-dependent. There is a gene that allows people to see and interpret red and its related colours such as cardinal, maroon, crimson, and so on, and that gene is linked to the x-chromosome. Because women are born with two x chromosomes, they have a better ability to see the entire red spectrum, whereas men, with a single x chromosome, aren't necessarily equipped to tell the difference between red and, say, cardinal.

Dopamine, a neurotransmitter released during the beginning stage of a relationship, is also triggered when cocaine and nicotine are used. It provides the surge of pleasure and euphoria that makes those narcotics so addictive. It also increases the secretion of testosterone, which, as previously indicated, is necessary for attraction. If you were to choose between the three, we believe falling in love is the safer option.

Granted, everyone dislikes certain colours, but is it really possible to be afraid of a specific colour? Apparently, yes. Chromophobia, also known as Chromatophobia, is an irrational fear or aversion to certain colours. Fortunately, chromophobia is an extremely rare diagnosis that is caused by a conditioned response or a previous negative experience.

Everyone has experienced the agony of rejection at some point in their lives, but did you know that rejection causes physical harm as well as emotional pain? Even if you are unable to feel physical pain, scientists have discovered that the reactions and cascading events that occur in the brain after rejection or physical pain are nearly identical. Furthermore, the same natural chemical is released in both cases.

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.

Women, believe it or not, are more vulnerable to liver disease such as hepatitis (an inflammation of the liver) and are more likely to die from liver cirrhosis (a chronic disease). Women are also more likely to suffer from alcohol-related brain damage, such as loss of mental functions and reduced brain size.

Wilbur and Orville Wright, popularly known as the Wright Brothers, are famed for inventing the aeroplane, which may lead you to assume they were a well-educated couple, however none of them graduated from college. The discovery gained the brothers fame and money, and thankfully for them, they did not live to become one of those innovators who regretted their creations.

During the Victorian era, there was a significant change in the way people dressed. The Victorian dress reform, also known as the rational dress movement, occurred between the 1860s and 1890s, during the middle and late Victorian eras. Reformers proposed, wore, and even designed clothing that was more practical and comfortable than what was available at the time.

There is a spa in Japan where you can bathe in coffee, as well as wine, tea, and other beverages! Bathing in coffee is said to have recharging, relaxing, and skin beautifying properties.

Ventriloquist dummies, like dolls, have become a staple of horror films. A ventriloquist's dummy named Slappy is one of R.L. Stine's most iconic antagonists. If they terrify you, avoid visiting the Ven Haven Museum near Fort Mitchell, Kentucky. Vintage ventriloquist dummies line the walls. This is undoubtedly your worst nightmare if you're afraid of dolls. How funny, these people should have destroyed them, but no, they thought why not show it to the world...

According to World Tourism Organization statistics, Mexico has the greatest number of international tourists in Latin America and is rated #10 in the world. This is unsurprising considering the variety of culture and environment on offer in Mexico. UNESCO has designated 32 places in the nation as World Cultural Heritage sites. Mexico tops the American continent in this area once more, and is ranked sixth overall.

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.

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.

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...

Danish researchers investigated 387 pairs of twins in their 70s, 80s, and 90s. They discovered that merely glancing at someone’s face may predict whether they would live until old age. If a person appears younger than their actual age, they will live longer than if they appeared older. And scientists have showed that it is pre-programmed at the DNA level. Telomeres, which are key bits of DNA that signal a cell’s reproduction ability, are also connected to how youthful a person seems. People who appear to be younger have shorter telomeres, yet longer life...

According to the World Health Organization, only Belarus consumes more alcohol than Moldova. With each person consuming an average of 16.8 litres of liquor each year (excluding under 15s). Well that is a lot of booze..

Stubbs, an orange cat, was named honorary mayor of the Alaskan town of Talkeetna in 1997. With a population of 772 in 2000, it would not have taken many votes to win the position (and the small town didn't have a real, human mayor anyway), but Stubbs proved adept at the role, gaining fans from all over the world and "serving" in the position for years, greeting tourists and becoming a beloved symbol of the town until his death in 2017.

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.

It may be difficult to believe, but we have roughly the same number of hairs on our bodies as chimps; the difference is that our hairs are useless, being so fine that they are almost invisible. We're not sure why we lost our furry protection. It has been proposed that this was done to help early humans sweat more easily, to make life more difficult for parasites like lice and ticks, or even because our ancestors were partially aquatic.

If you don't like grapes, wearing crimson underwear on New Year's Eve is also said to bring good luck. The custom of wearing red underwear on December 31 is widespread, spanning Italy, Spain, Bolivia, and beyond. Everyone is welcome to take part; men and women alike follow the tradition. Participants also have a variety of clothing options as an added bonus. Others wear socks, bras, and garters, while some wear red boxers, briefs, or panties.

Speaking of astronauts, their experience has shown that transitioning from weightlessness to gravity can be taxing on the body. Muscles atrophy and bones lose bone mass in the absence of gravity. According to NASA, astronauts in space can lose 1% of their bone mass per month.

Ancient Egyptians regarded cats to be sacred creatures. Most households are said to have kept a cat as a pet because they felt it would bring them good luck!

During the first year of being in a romance, a protein in our cells called Nerve Growth Factor (NGF) that is vital for the functions of particular sympathetic and sensory nerve cells, appears to thrive. During youthful love, our senses are heightened, and our fight or flight reaction system is activated.