If you go outdoors in cold weather, without warm clothes, you will catch a cold
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Actually, viruses and infections spread more in warmer climates. What the cold climate does is that it lowers your resistance and you might feel unwell temporarily. However, it is not advisable to go out in cold weather without putting on adequate clothing.
Our mouth makes more than a litre of saliva every day
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Between 1 - 1.6 litres of saliva is produced in our mouth every single day. Saliva not only keeps the mouth hydrated but aids in digestion as well.
Shaving body hair doesn't ensure they'll come back thicker
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There is no scientific proof that people, who shave their heads or body, get thicker hair when new hair grow. Because the new hair feels coarse, it gives the impression of being thicker.
Fat people have slow metabolism which is why they are fat
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Research has shown that a person's weight has less to do with metabolism and more to do with lifestyle. Someone with a sedentary lifestyle automatically has a fatter body. Metabolism is not necessarily responsible for weight gain.
Sucking poison out of a snake bite is an effective way of curing it
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The correct way to cure snake bite is by washing the bite with soap water and getting immediate medical help. Sucking the poison out increases risk of infection.