Why does the skin on my fingers wrinkle in the water?

Hairless areas of the skin react in a special way to water. Unlike the rest of the body, the skin on the fingers, toes, palms and feet becomes wrinkled after being in water. According to one of the scientific theories, this is the result of adaptation – fingers with wrinkles and bumps are better at holding dry and wet objects.

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Why does the “brain freeze” effect occur when eating cold food?

Most people have probably experienced an unpleasant headache after a few sips of a cold drink or ice cream. Hypothermia of the brain (brain freeze) occurs due to the fact that when eating chilled food, the vessels in the back of the throat begin to contract intensely from the cold, and then expand again when the temperature of the tissues becomes higher. This triggers a nerve response, which causes the headache.

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Why does trembling occur?

The appearance of tremors in the body occurs for various reasons, one of them is the body’s reaction to cold. In this case, shivering becomes a defense mechanism against hypothermia. Under the influence of cold, muscles begin to contract frequently, producing muscle energy, thereby raising the body temperature to normal.

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Why does human growth increase in space?

It was noticed that during a long stay in space, the growth of astronauts increases, and after returning to Earth, it returns to a normal state. Scientists explain this phenomenon by the fact that on Earth, under the pressure of gravity, the vertebrae shrink, and in zero gravity, the gaps between the vertebrae expand and the spinal column stretches, and with it the growth of a person increases.

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Why do joints hurt when the weather changes?

Some people can predict changes in the weather from knee pain. This may be due to the fact that with the onset of cold weather, the nerve endings in the tissues around the joints become tense and stiff.

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Goosebumps or why goose bumps appear?

Goose bumps are small pimples at the base of the hairline on human skin that occur in cases of emotional stress (adrenaline rush), or when the body is cold. This condition is explained by the fact that the human body does not have a large amount of hair and the contraction of the miniature muscles associated with each hair, which occurs when goose bumps appear, is not as effective for warming as in animals.

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