12 weird facts about the human body

Find out why women are stronger than men are freezing, for which we can be fingerprinted and joint pain on whether to predict the weather.

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1. Is it true that the feet increases with age

Over the years, tendons and ligaments are weakened. Because of this arch of the foot may become flattened and then stops themselves become wider and longer. Particularly susceptible to this are people with obesity and diabetes, as well as those who have swollen ankles. By 70-80 years legs usually increases by one size.

2. Why women are stronger than men are freezing

Women have more body fat, but it is concentrated in the center of the body and warms the internal organs. So of course it is less protected from the cold. And when the cold hands and feet, it seems that the cold throughout the body.

In addition, women have a lower threshold for the perception of the cold. At the same temperature, the blood vessels in the fingers constrict women more than men, so the hands are frozen stronger.

3. Is it true that there is a smell of old

Yes. Moreover, young people and middle-aged people, too, have the characteristic smell. But this is not the most surprising. According to a studyThe Smell of Age: Perception and Discrimination of Body Odors of Different Ages.Older people smell is less intense and more pleasant than the other two groups.

4. Why coffee room temperature such unpalatable

Some taste receptors more sensitive to the molecules of food ambient or slightly above room temperature. Hot coffee seems to be less bitter (and therefore more delicious), because the taste receptors that recognize bitter, just insensitive to hot. More on the perception of taste affects the smell. A hot cup of coffee smells nicer than lukewarm.

5. Why is it possible to wake up from the full bladder, but not crowded bowel

Neurons in the gut controlled contraction of the colon that pushes the waste digestion. And the work of neurons is regulated circadian rhythms - the body's internal clock to wake us in the morning and in the evening cause drowsiness. It is due to the circadian rhythms of the night, we are not there needs to empty the bowel.

The bladder can also accommodate a strictly defined amount of urine produced by the kidneys and it constantly. You can usually sleep 6-8 hours without feeling the need to empty the bladder. But in certain diseases or if you drink a lot of fluids in the evening, you can wake up at night.

6. Why on a roller coaster feel that your stomach rises to the throat

Because your internal organs are actually moving. Belt keeps you from falling, but the stomach and intestines, weakly enshrined in the abdomen, "flies" up. They are thus not damaged. Nerve endings capture the movement, and it seems to you that the stomach was in my throat.

7. Why do we have fingerprints

It used to be that they help to hold objects. However, scientists from the University of Manchester sayFingerprints are unlikely to increase the friction of primate fingerpads.That the grooves on the fingers only hinder the smooth flat to keep items, reducing the contact area between the fingers and the surface. They suggest that these grooves protect the skin on the fingertips of the damage and calluses.

8. It is the pain in the joints predicts the change in the weather

Quite possible. Before the onset of bad weather usually drops sharply atmospheric pressure. From this body tissues expand, which can cause cancer and pain. The effect usually is weak, but people with arthritis and inflamed joints can feel it stronger.

Influences and temperature. Thus, researchers from Tufts University foundChanges in barometric pressure and ambient temperature influence osteoarthritis pain.That the temperature drop to 10 degrees increases the osteoarthritic knee pain.

9. Why do you need to hold your breath when hiccups

If you do not breathe in the body accumulate carbon dioxide, which will stop the spasms of the diaphragm, causing hiccups. When the diaphragm involuntarily reduced, there is a quick breath. However, it interrupts the epiglottis - the cartilage located behind the language. Closing it and produces a distinctive sound for hiccups.

10. Why teeth change position, even if as a child you wore braces

This is largely due to the loss of bone tissue of the gums. This loss mainly occurs in the aging process, but also enhance its smoking and periodontal disease. If you go away a lot of bone, teeth will move from its place.

11. Why when running sore in the side

While running, the diaphragm stretches and pulsates, causing a sharp stabbing pain under the ribs, usually on the right side. To ease the pain, slow down and do not breathe too deeply.

12. Why sweat in the armpits smell worse than in other places

In our bodies are two types of sweat glands. Those that are located on the hands and feet, separated mixture of water and salt. But glands in the armpits secrete an oily substance, which feed on bacteria. Just in the process of eating the oil and bacteria occur odor.

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