246 questions and answers in this section
Explain why do we sometimes feel dizzy when getting up suddenly?

Explain why do we sometimes feel dizzy when getting up suddenly?

When you move too quickly from a lying or sitting position to standing, some of the blood flows down to your legs due to gravity. Your body...

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Explain why do we sweat?

Explain why do we sweat?

Sweating is a natural phenomenon that allows the body to release some of its internal heat and regulate its temperature, mainly when it heats up...

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Explain why do we get hiccups and how to get rid of them?

Explain why do we get hiccups and how to get rid of them?

Hiccups are the result of an involuntary spasm of the diaphragm, the main muscle that allows for quiet breathing. When it suddenly contracts without warning, it quickly...

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Explain why do ice cubes make drinks colder?

Explain why do ice cubes make drinks colder?

When you add an ice cube to your drink, there is necessarily a transfer of heat, from the liquid (hotter) to the ice cube (colder). It’s a...

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Explain why do some people experience tingling sensations while sleeping?

Explain why do some people experience tingling sensations while sleeping?

The tingling sensations felt during sleep often come from the compression of a nerve or temporary poor blood circulation. When a nerve is compressed for...

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Explain why do we feel sleepy after eating?

Explain why do we feel sleepy after eating?

When you eat, your body exerts extra effort to manage all of that. The stomach and intestines get to work breaking down food into smaller, more absorbable...

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Explain why do veins appear blue on the skin even though blood is red?

Explain why do veins appear blue on the skin even though blood is red?

Human skin is a type of filter that allows light to enter and exit in a particular way. It is made up of several layers: the epidermis...

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Explain why is honey a good healing agent?

Explain why is honey a good healing agent?

Honey naturally contains hydrogen peroxide, a type of hydrogen peroxide produced by an enzyme called glucose oxidase. This helps kill bacteria and prevents infections without...

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Explain why do we sneeze with our eyes closed by reflex?

Explain why do we sneeze with our eyes closed by reflex?

When we sneeze, our eyes close without us even thinking about it. This reflex is there for a good reason: to protect our eyes. When...

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Explain why is blinking necessary?

Explain why is blinking necessary?

Blinking acts as a quick protective barrier for your cornea. It's like closing the shutters in the face of immediate danger: as soon as dust, an insect,...

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