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○○Amazing facts-Part 3○○

Human Body Facts

# Memories Work in Mysterious Ways. Have you ever walked into a room and then forgotten why you went there in the first place? This is because your brain perceives the doorway as an “event boundary,”and memories from the room you just leftare “stored” there for when you needthem. This is why when you go back through the doorway into the prior room you can often remember what it is that you forgot!
# Some Women See More Colors. Mostpeople have three types of color receptors that allow them to see color vision. Some women have four, however, which allows them to see awider range of colors than the average person (a small percentage of women even have five color receptors). Why women? The red and green color receptors, which can be shifted to allow for a greater range ofcolor vision, are located on the X chromosome; blue is on the Y.
# It Might be Healthy to Eat Boogers. Your nasal mucus might be host to small amounts of contaminants (acting as antigens) that may actually“educate” and boost your immune system when they’re consumed. So contrary to the belief that eating boogers could make you sick, it might actually help your body to fightoff illnesses.
# Most People Only Breathe Through One Nostril at a Time. Though you’ve got two nostrils, about 85 percent of people only use one at a time. But, erectile tissue in your nose slowly swells the tissue in one nostril while shrinking it in the other, so you automatically switch breathing between nostrils about every four hours.
# Seven Miles of New Blood Vessels for Every Pound of Fat Gained
When you gain a pound of fat, your body makes seven new miles of blood vessels. This means your body must work harder to pump blood through all of these extra new vessels, which may put a strain on your heart, and may reduce oxygenation and nutrient replenishment in other tissues.

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