Why do people wheeze when they exhale as hard as they can, even when they don’t have asthma?

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Why do people wheeze when they exhale as hard as they can, even when they don’t have asthma?

In: Biology

Our lungs always have a small amount of moisture in them, to aid with lubrication and cellular protection. When you exhale as hard as you can, the tubes inside your lungs compress, and narrow. Some of the liquid in the tubes will then be “picked up” or disturbed by the air passing by, and that translates into a wheezing sound.

In asthmatic people, the tubes are already compressed due to inflammation, which causes the same wheezing sound even when you’re *not* exhaling as hard as you can.