93 questions and answers in this section

Health and Wellness » General Medicine

Explain why sleep is necessary for the body?

Explain why sleep is necessary for the body?

During the night, your body plays doctor: it repairs your damaged muscle tissues, renews your cells, and regenerates your skin. It is during deep sleep...

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Explain why do we get pimples when we are stressed?

Explain why do we get pimples when we are stressed?

When we stress, our body secretes more hormones like cortisol. It causes our sebaceous glands (the ones that naturally produce sebum) to go into overdrive...

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Explain why the Black Death decimated Europe in the Middle Ages.

Explain why the Black Death decimated Europe in the Middle Ages.

The Black Death, which mainly came from Central Asia, spread quickly due to the intensity of trade exchanges. Merchant ships unwittingly transported infected rats, whose...

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Explain why did Catherine de Medici always wear gloves?

Explain why did Catherine de Medici always wear gloves?

In the time of Catherine de Medici, wearing gloves was clearly an outward sign of wealth and a way to show who was in charge. For her,...

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Explain why joints sometimes crack?

Explain why joints sometimes crack?

In our joints, there is a fluid called synovial fluid that acts as a natural lubricant. When we stretch or bend a joint, the pressure...

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Explain why sound travels farther at night than during the day?

Explain why sound travels farther at night than during the day?

At night, many human activities decrease: car traffic, various kinds of work, and industries pause. As a result, there are far fewer background noises to...

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Explain why do our ears sometimes ring after listening to music at a high volume?

Explain why do our ears sometimes ring after listening to music at a high volume?

When you listen to your music too loudly, your ears undergo an auditory shock: the hair cells located in your inner ear, somewhat like tiny...

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Explain why yawning is contagious?

Explain why yawning is contagious?

The human brain has specific groups of neurons, called mirror neurons, that activate both when we perform an action and when we see someone else...

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Explain why mosquito bites itch.

Explain why mosquito bites itch.

When the mosquito lands on your skin, it punctures its proboscis to suck your blood. During the process, it injects saliva, which contains anticoagulant and...

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Explain why does lack of sleep affect our memory?

Explain why does lack of sleep affect our memory?

When you sleep, your brain is far from resting; it's seriously working on your memories. In fact, while you snooze, especially during the deep sleep...

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