#nature

WILDLIFE 🐳🦁🌱

As the blooms of spring finally emerge, so too does Britain's wildlife...

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Why does the cough get worse at night?

When a person lies in a horizontal position, mucus accumulates in the nasopharynx, the airways are not cleared. With a runny nose, secretions from the nose and sinuses drain into the throat and cause a cough reflex, so the coughing is worse during sleep, especially when we roll over from side to side, and in the morning when get out of bed.

Dust and dry air make the cough worse. This is especially true in apartments with central heating. Dry and hot air irritates the mucous membranes and provokes coughing fits.

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Why does a person not recognize his or her own voice on a recording?

A person's own voice normally reaches their hearing in two ways: through the air (like other people's voices and all external sounds in general) and through the tissues of the body, primarily the bones. Due to the various speed of sound in these media, the same initial sound acquires a different timbre.

In this case we hear a superposition of "air" and "bone" timbres of the voice. And when listening to a recording, we hear only the "airy" part of it.

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