18 Amazing Facts You Won't Be Able to Forget

If you get interested in truly random things that were of no importance during the day, and can’t find the answers, you’re going to just love this. We’ve done all the hard work for you and found the answers to the most burning random questions.
Human saliva contains a natural painkiller that is six times more effective than morphine. But unlike the latter, it doesn't cause any side effects or addiction.
When the Universe appeared, there were not so many substances out there: just hydrogen and a bit of helium, and almost nothing else. Stars convert their "fuel" into something else. This way, hydrogen gets turned into helium, and helium, in turn, transforms into nitrogen, oxygen, carbon, iron, and sulfur, in short, everything a human body is made of. This building material for our bodies comes from dying stars.
Any human being is born with approximately 9,000 taste buds which work together with the sense of smell to provide you with the full picture. But after 40, the number of taste buds starts to become smaller which later leads to being unable to differentiate taste. As for the sense of smell, it doesn't fade until you're 70.
In a study by Brown University, sleeping people were exposed to two scents: peppermint and pyridine, which is a typical byproduct of fire. No one responded to the peppermint smell.
The system of your blood vessels is so long it can go around the planet more than two times.
How we perceive the size of objects depends on different factors, for example, visual angle. And even if you know the actual size of an object, you still may misestimate it if the distance between you and the object is too big, for example.
In 1991, sociologist Scott Feld calculated the number of friends people in one test group had. Then he compared the results with the average number of friends the friends of those in the test group had. It turned out that the second number was always bigger than the first one.

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TIMESTAMPS
Human saliva contains a natural painkiller with the name opiorphin. 0:36
Atoms of oxygen that are in your lungs right now, carbon in your muscles, calcium in your bones, and iron in the blood appeared inside stars. 1:19
By the time you're 60, half of your taste buds will have stopped functioning. 2:12
During your life, you meet about 16 murderers and don't know about this. 2:45
You don't feel smells when you're sleeping. 2:58
Every time you shuffle a deck of cards, you're the first person in history who shuffles it exactly in this order. 3:26
If a pregnant woman suffers from internal organs damage, her baby sends her stem cells through the umbilical cord. 3:35
The system of your blood vessels is 60,000 miles long. 3:45
Traffic lights are much bigger than they seem. 4:11
Every year, you become a 98-percent new person. 4:48
If you manage to avoid oxygen altogether, you'll stay young forever. 5:24
A person who sits closest to you on the left is in fact, farthest from you on the right. 5:41
Your age is just the number of rotations you have made around the Sun. 5:50
A cloud of a medium size weighs around 500 tons or 100 elephants. 5:56
One 17-inch pizza is bigger than two with the size of 11 and a half inches. 6:18
Your friends will always have more friends than you. 6:26
People who were born in the 1990s managed to live in 2 millennia, two centuries, and three decades, but they're still under thirty. 6:52
There exist "forbidden" colors that human brain just can imagine. 7:03

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