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1Blowing nose

Blowing your nose when you have a cold reduces your chances of getting infected with a cough.- Source


2. In 2009, a woman named Natasha Timarovic was cleaning her teeth at her home in the Croatian city of Zadar when lightning struck the building. The lightning had traveled down the water pipe and struck her mouth, passing through her body. Her rubber shoes prevented the electricity from exiting through her feet, so it shot out of her butthole.- Source


3. Farts smell worse in the shower because our nose works better in high heat and humidity.- Source


4. Picking your nose and eating it may be beneficial to your immune system.- Source


5. Mouth-breathing can cause weak jaw development, crooked teeth, and other unattractive facial features. It literally makes you ugly.- Source


6Hair texture

Hair texture is caused by follicle shape. Round follicles grow straight hair, flat follicles grow curly hair.- Source


7. Athletes are more likely to get cavities. Regular exercisers are “mouth breathers”, which causes plaque to dry on their teeth.- Source


8. Body hair doesn't stop growing at a certain length, it just lives a shorter life and falls out before the hair on your head.- Source


9. If you pour cold water into a person’s ear, their eyes will move in direction of the opposite ear, if you pour warm water into their ear, their eyes will move towards that ear. This is used to test for brain damage and is called ‘caloric stimulation’.- Source


10. Approximately 1/3 of people have jaws that pop or click when they are opened all the way.


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11Shaving hair

Shaving your pubic hair increases the risk for STD’s because shaving causes many fine cuts in the skin near your genitals, giving more access points for viruses and bacteria to enter your system.- Source


12. An orgasm can clear up your sinuses. This is because your body gets a rush of adrenaline when you have an orgasm, which causes tissues in the nose to shrink, opening up passageways.- Source


13. Federico da Montefeltro, fifteenth-century duke of Urbino, after having lost one eye in a tournament had his surgeons successfully amputate the bridge of his nose to widen his field of view.- Source


14. The tongue map chart you remember from school that showed parts of the tongue responsible for different aspects of taste is the result of a mistranslation from a German paper and is not true.- Source


15. Aztecs took two showers a day and used flowers as soap and cleaned their mouth with them as well. The Spaniards at that time avoided water because it was thought that water on your skin made you more susceptible to the plague and they used urine to clean their mouths and teeth.


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16Low-frequency sounds

Human ears can’t tell where low-frequency sounds come from. Therefore subwoofers can be hidden in home theaters or in trunks of cars.- Source


17. Superior canal dehiscence is a disease that affects the inner ear and amplifies all internal sounds. It gets to the point where the sound of the eyeballs moving in their sockets sounds like “sandpaper on wood.”- Source


18. If you pluck a nose hair, only the eye on the same side will tear up.- Source


19. Your nose is always visible to you. Your brain ignores it through a process called Unconscious Selective Attention. - Source


20. Geneticists have figured out the time that evolving humans lost their primate body hair by using mitochondrial DNA to calculate the date that head lice evolution diverged from that of pubic lice. DNA comparisons between the human head louse and pubic louse indicate a common ancestor about 12 million years ago.- Source


21Lump in throat

The lump you feel in your throat when you’re nervous or crying is an autonomic response to stress that expands the glottis in an attempt to provide you with more oxygen.- Source


22. The fizzy sensation on your tongue from carbonated drinks is not caused by the tiny bubbles popping. The fizz is us actually tasting the carbon dioxide.- Source


23. Humans are the sweatiest primates alive. We have up to five million sweat glands producing a maximum of three gallons of sweat per day. The production of sweat glands is inversely related to the production of hair, and the evolutionary loss of our hair is connected to our success as a species.- Source


24. People of African and European ethnicity usually have the wet type of ear wax. Nearly all people of Native American and East Asian ethnicity have the dry type of ear wax.- Source


25. The presence of eyebrows is more important for facial recognition than the presence of eyes. Eyebrows may serve as high-contrast lines that give the appearance of the brow greater clarity and emphasis, and their associated musculature allows for sophisticated, often involuntary gestures that may be discerned from a relatively large distance. As such, the eyebrows appear to play an important role in the expression of emotions and in the production of other social signals, and they may also contribute to the sexual dimorphism.- Source

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