20 Mind-blowing Facts That Sound Unreal But Are Actually True

 Here are 20 Mind-blowing facts that sound unreal but are actually true?

1. Human beings are shockingly more unaware of their bodies than they are about their surroundings. If we could increase our body awareness by only 20%, and listen to our bodies more, we could reduce the risk of sickness significantly by over 50%.
2. The mysterious sixth sense is actually a real sense made up of nerves, brain, and all the other senses combined, to help humans detect a threat that the eyes can’t see and the ears can’t hear. Interestingly, the sixth sense can detect what the eyes or ears can’t detect, including invisible phenomena. Have you ever wondered why sometimes your hair rises and you grow those goose bumps for no particular reason when passing through an eerie-looking place?
3. Most people are completely unaware that brushing your teeth too aggressively can actually wear down the enamel and make teeth more vulnerable to sensitivity to hot and cold foods. The enamel is naturally armed with a protective layer to prevent germs from penetrating the teeth, but brushing removes this layer leaving the enamel unprotected.
4. Goose bumps evolved to make our ancestors' hair stand up, giving the appearance of being more threatening to predators.
5. Scientists aren’t exactly sure why we yawn, but they suspect it happens reflexively to help regulate body temperature, signal hunger, force rest, force sleep, signify boredom or lack of concentration, or divert attention to something more important.
6. All of the blood vessels in the human body would encircle the Earth four times, if they were laid end to end.
7. Humans are the only animals with a chin. One theory goes that we need the extra bone to deal with the extra effort involved with chewing, but a more accurate theory could be that humans evolved chins to enhance their physical features and appearance.
8. The human nose can detect about 1 trillion different smells.
9. The spleen is an internal organ entirely possible to live without. If the spleen is removed through a process known as splenectomy, other internal organs next to it like the liver can take over the functions of the spleen.
10. The tongue is made up of eight interwoven muscles that resemble the trunk of an elephant or the tentacle of an octopus.

11. From a genetic perspective, all human beings are more than 99% identical.
12. The human skin is the body’s largest organ and can comprise 15% of a person’s total weight.
13. Thumbs appear to have their own pulse. They tend to play the role of supervisor to the other fingers, which tend to do most of the work.
14. Extraocular muscles in the eye are the body’s quickest muscles. They allow you to shift both of your eyes in the same direction in a 50-millisecond motion.
15. Amygdalohippocampectomy is a surgical procedure that extracts half of the amygdala from the brain, along with the patient's perception of fear, in essence removing the sense of fear from the patient.
16. Nobody really knows what fingerprints are for or why they evolved, but they might help prevent blisters, scrub our bodies when we’re washing, or improve our grip.
17. Over the course of our lifetimes, the heart beats approximately more than 3 billion times.
18. Blushing is triggered by a surge of adrenaline in the body.
19. People can actually detect the sense of fear in your eyes, but they need your corresponding action to confirm it.
20. During breathing, most of the air goes in and out of one nostril. Every few hours, the workload shifts to the other nostril. This happens entirely without your consciousness.